Add search self-tests (hash consistency, QSearch sanity) and a native EPD parser (`epd` command + ParseEpdRecord), fixing a silent-corruption bug in convert_epd.pl that broke every Black-to-move EPD conversion.

testsearch.c: TestSearchHashConsistency exercises the hash table through real search (repeat-with-warm-table and shallow-then-deep agreement) rather than synthetic store/probe calls. TestQSearchSanity checks termination and a node-count ceiling; its own header documents that the TEST=1 self-test build doesn't define PERF_COUNTERS, so it checks whole-search node count rather than the qsearch-only counter. A planned null-move zugzwang test was dropped in favor of tests/zugzwang.epd (best-move outcome, not an internal counter) after the three classic literature positions turned out not to structurally reach this engine's verification-search code path on this build.

fen.c/script.c/command.c: new `epd <file>` command reads raw EPD directly via ParseEpdRecord, reusing ScriptCommand's existing suite-reporting machinery (factored into _ProcessSuiteLine/_PrintSuiteReport). Replaces the need for tests/convert_epd.pl, which had a real bug: its bm/am regex's [^b]+ filler breaks on any Black-to-move record (side-to-move field is literally "b"), and unscoped $fen/$id/$solution globals meant a failed match silently duplicated the previous record instead of erroring.

tests/ep_to_epd.pl converts the existing setboard/solution/avoid/id/go suites back to real EPD; cross-checked ecm_ringers.ep_ via `script` against ecm_ringers.epd via `epd` -- byte-identical node counts and solve stats. Added .epd siblings for every genuine tactical suite in tests/.

Added src/TESTING_PLAN.md: full audit of test*.c coverage gaps (dead SEE oracle, unwired eval/recognizer tests, zero hash-table correctness coverage, thin search self-tests) with a prioritized plan for closing them.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

1 files changed, 232 insertions, 0 deletions

diff --git a/tests/ecm_hard.epd b/tests/ecm_hard.epd
new file mode 100644
index 0000000..f73a630
--- /dev/null
+++ b/tests/ecm_hard.epd
@@ -0,0 +1,232 @@
+2k4r/1pp2ppp/p1p1bn2/4N3/1q1rP3/2N1Q3/PPP2PPP/R4RK1 w - - bm Nd5; id "ECM.014";
+r3rbk1/1pq2ppp/2ppbnn1/p3p3/P1PPN3/BP1BPN1P/2Q2PP1/R2R2K1 w - - bm Nxd6; id "ECM.018";
+b7/2q2kp1/p3pbr1/1pPpP2Q/1P1N3P/6P1/P7/5RK1 w - - bm Rxf6+; id "ECM.019";
+r1b2rk1/2q2ppp/2pbp3/p7/4Nn2/3B4/PPPBQ1PP/R4R1K w - - bm Rxf4; id "ECM.028";
+3r2k1/1q1P1ppp/r2R2n1/p4Q2/1ppB2R1/6P1/PP3PP1/6K1 w - - bm Rgxg6; id "ECM.029";
+r1b2rk1/pp2b3/2pn1n1p/3pNppq/3P4/BP1N2P1/P3PPBP/R1Q2RK1 w - - bm Nxc6; id "ECM.040";
+2rr4/5pk1/p1q3p1/3bpP1p/1p4nR/1N4Q1/PPP3PP/3NR2K b - - bm Bxg2+; id "ECM.043";
+1k1r1b1r/p1p1q3/2p1p3/4Ppp1/4nP2/P2BQ3/1PP3PB/2KR3R b - - bm Rxh2; id "ECM.051";
+r1b1r1k1/pp4bp/5np1/2qPB3/8/6NP/PPP1Q1B1/R4R1K w - - bm Rxf6; id "ECM.056";
+r4rk1/pp1b2pp/3bpq2/3p1p2/2PPn3/PP1B4/1BQN1PPP/R4RK1 b - - bm Bxh2+; id "ECM.060";
+r1b2rk1/1p2bppp/p3pn2/4B3/1qBR4/2N5/P3QPPP/R5K1 w - - bm Bd3; id "ECM.068";
+b1n1r1k1/2q2p1p/p4Pp1/1pBP4/4B1P1/2P1Q3/P4K1P/4R3 w - - bm Qh6; id "ECM.071";
+r1b2kr1/1p1p1pNp/p1n1p1p1/5P2/3QP3/2N5/PqP1B1PP/R4RK1 w - - bm fxg6; id "ECM.076";
+Q7/p1r1ppk1/1qP4p/2Rb2p1/8/3N2P1/4PP1P/6K1 b - - bm Qb1+; id "ECM.081";
+4r1k1/1b4pp/p7/1prP3q/2P1B3/5P2/P3Q2P/3RR2K w - - bm Bg6; id "ECM.084";
+rn1q1r2/4bpk1/p3p3/1pN1N1np/2pP4/4PpBb/PPQ4P/1B1RK1R1 w - - bm Nc6; id "ECM.091";
+6k1/1pqb1p2/5bpB/r2n4/4N1P1/1P3P2/1P1Q4/1K5R w - - bm Qxd5; id "ECM.099";
+r1bn1rk1/pp3p1p/6p1/2bR2N1/2B2B2/q1P1P3/2Q2PPP/4K2R w K - bm Nxh7; id "ECM.115";
+4qbk1/1R5n/p2pr1p1/2pQpNPp/P1P1P3/2P2P2/3B4/5K2 w - - bm Ne7+; id "ECM.117";
+2b2r2/1p2q1k1/r3pppp/4n2P/p3N3/1B4Q1/PPP3P1/3R1R1K w - - bm Rxf6; id "ECM.119";
+rn2qbr1/2p4k/p2p1nb1/1p1Pp2p/2P4P/2NBBPN1/PP1Q4/2KR2R1 w - - bm Nxh5; id "ECM.128";
+r1bq1rk1/pp2bp1p/2p2np1/3p2B1/3P4/2NQ2N1/PPP2PPP/4RRK1 w - - bm Rxe7; id "ECM.130";
+2rq1rk1/pp2bppp/1npp1n2/3PpN1b/2P5/2N3PP/PP2PPB1/R1BQ1RK1 w - - bm c5; id "ECM.131";
+8/1Qp3pk/7p/5p2/5Pqn/1P1r4/P5PP/2B2RK1 b - - bm c6; id "ECM.137";
+b3r3/q2B2k1/3Q2p1/1p5p/3pP3/5P2/1p4PP/5RK1 b - - bm d3+; id "ECM.142";
+6k1/4ppbp/p5p1/1B1Q4/2P2Pn1/8/qr4PP/2B2RK1 b - - bm Bd4+; id "ECM.145";
+8/p3q1kp/1p2Pnp1/3pQ3/2pP4/1nP3N1/1B4PP/6K1 w - - bm Ba3; id "ECM.146";
+4r3/Q2bppkp/3p2p1/3Nn3/4P3/6PP/1qr2PB1/R3R1K1 b - - bm Ra8; id "ECM.155";
+3R4/1p2kp2/p1b1nN2/6p1/8/6BP/2r1qPPK/Q7 w - - bm Rd7+; id "ECM.162";
+r1b3k1/ppp2r2/6p1/3n3p/6qP/3BQ3/PBP5/2KR3R w - - bm Bd4; id "ECM.180";
+4r1k1/1pbb3p/2pp2q1/p1n5/2P2R2/1PN1n1P1/PB2Q1B1/5RK1 w - - bm Qxe3; id "ECM.182";
+1R3b2/3r3k/2p1bp1p/r1q1pNpQ/2PpP2P/6B1/P4PP1/1R4K1 w - - bm Nxh6; id "ECM.186";
+r1b4r/pp2ppk1/2np1np1/3N3p/2B1P3/q3BP2/P1PQ2PP/1R3RK1 w - - bm Nxe7; id "ECM.187";
+5rk1/5pbp/b5p1/p1nNN3/1p2n3/1P4PP/P4PB1/2BR2K1 w - - bm Nd7; id "ECM.190";
+2k1r1r1/ppb2p2/6b1/2qP4/2P2P2/4pP1p/P3Q2P/2RBRN1K b - - bm Bd3; id "ECM.191";
+r2r1bk1/3qp2p/3pp1p1/p2n2N1/2N3Q1/BP4P1/P4PP1/2R3K1 w - - bm Nb6; id "ECM.193";
+r1k3r1/pppnb1p1/4N3/3QP2p/3P3q/4B3/PPP2P2/R3KB2 w Q - bm Ba6; id "ECM.198";
+r1bq1rk1/pppn2bp/3p2p1/3N1p2/8/BP1BRQ1P/P1PP1PP1/4R1K1 w - - bm Nxc7; id "ECM.206";
+r4rk1/ppp3b1/3p1qp1/3Pp3/2P1Bn2/4BP2/PP1Q4/2K3RR w - - bm Rxg6; id "ECM.211";
+r4n1r/ppq1nk2/1bpRpN2/4PpQ1/8/2B4P/PPP2PP1/2KR4 w - - bm Rd7; id "ECM.215";
+rnb1kr2/p4pQ1/8/1ppPpP2/2p1P3/N6P/Pq4B1/3R1RK1 w q - bm Nxb5; id "ECM.226";
+8/pR3Bk1/3p2p1/5b1p/2P4P/6P1/P4bQK/4q3 b - - bm Bg1+; id "ECM.228";
+rq3r1k/p2n1p2/1pbb1np1/2p2BB1/8/2N2N2/PP3QPP/3R1RK1 w - - bm Rxd6; id "ECM.231";
+3rr1k1/1b5p/p6p/1p3N2/6Pb/P1Q1p3/1PP4P/R5K1 b - - bm Bf2+; id "ECM.237";
+r2qr1k1/1pnb1pp1/p1n1p2p/8/P2P3P/B2B1NP1/6P1/R2Q1RK1 w - - bm Bh7+; id "ECM.247";
+1k1r1r2/2b2R2/Bppp2p1/2q4p/Q2pP3/P2P4/2P3PP/1R4K1 w - - bm Bb7; id "ECM.251";
+4n1q1/1k1b4/2p4R/2Pp4/1p1N1rpQ/3B4/PPP2P2/2K5 w - - bm Nxc6; id "ECM.271";
+r3r1k1/pp3pp1/2bb1q2/3p4/4n1Pp/2P1BB1P/PP2NPK1/R1Q4R b - - bm Qxf3+; id "ECM.274";
+rn4k1/pp2p1b1/4b3/q2p2Q1/2B2P2/8/P1P1K1P1/R6R w - - bm Rh8+; id "ECM.277";
+4k3/p4ppp/nb1P4/4p3/1P6/P4BP1/3q1r1P/2R2QKR w - - bm Qb5+; id "ECM.287";
+2r1r1k1/pp1nbpp1/4pn1p/q3NN1P/P1pP1B2/2P5/1PQ2PP1/R3R1K1 w - - bm Nxg7; id "ECM.289";
+1r3rk1/6p1/p1pb1qPp/3p4/4nPR1/2N4Q/PPP4P/2K1BR2 b - - bm Rxb2; id "ECM.291";
+2r1qrk1/pp1b1ppp/4pn2/n1b5/8/2NQ1NP1/PP1BPPBP/R2R2K1 w - - bm b4; id "ECM.297";
+2b1qr1k/7p/p1pR2p1/1pP1p1Q1/4P3/1B6/PP4PP/6K1 w - - bm Re6; id "ECM.298";
+8/2b2k1p/2N2pp1/P2p4/3KnP2/6BP/P5P1/8 w - - bm Kxd5; id "ECM.300";
+r3r1k1/p1q2pp1/2p4p/7n/BPPP2N1/3Q1N2/P3n1P1/R1B4K b - - bm Nhg3+; id "ECM.312";
+r1b2rk1/p3bppp/2q5/8/2p1NR2/PnB1P3/1PB1Q1PP/3R2K1 w - - bm Rd6; id "ECM.315";
+1rb2rk1/p1p2ppp/2q5/3R4/2P1N3/bP4B1/P1Q2P1P/1K5R w - - bm Bd6; id "ECM.318";
+rnb2rk1/pp2bppp/2p5/q7/4NN2/4B1QP/PPP3P1/2KR3R w - - bm Rd5; id "ECM.321";
+3r1rk1/pbqn1pp1/1pp2n1p/2b1p1B1/P1B1P2N/2N4P/1PP1QPP1/3R1RK1 w - - bm Rxd7; id "ECM.327";
+2r2r1k/1pq1b1p1/p1b1Qn1p/8/3B4/2NB4/PPP3PP/3R1R1K w - - bm Rxf6; id "ECM.330";
+r1bqr1k1/pp3pp1/2p4p/3PN1n1/3P1b2/2NB4/PPQ2PPP/3R1RK1 b - - bm Rxe5; id "ECM.336";
+2r2rbk/6bp/5qp1/1N1p1n2/4p3/1p5P/1P3PP1/RBBQ1RK1 b - - bm Ng3; id "ECM.338";
+rnb2rk1/3n1ppp/p3p3/1p2P1q1/3N4/1BN5/PPP3PP/R2Q1RK1 w - - bm Nxe6; id "ECM.343";
+2r1k2r/1pq1bppp/p3bn2/4N3/2pPN3/2P5/P3QPPP/R1B1R1K1 w k - bm Nxf6+; id "ECM.345";
+r3r1k1/pp3ppp/1qp5/2bbNQ2/5B2/2P5/PP3PPP/3RR1K1 w - - bm Rxd5; id "ECM.349";
+1r6/3b1pk1/pr1p1q1p/2pPb1p1/2B1P1P1/2N2PP1/1PQ3K1/RR6 b - - bm Rxb2; id "ECM.358";
+2r3k1/p1r1ppb1/2bp1np1/q5N1/1p1BP2Q/3P4/PP2N1PP/2R2R1K w - - bm Bxf6; id "ECM.360";
+2rbr2k/1pq2ppp/p3bn2/4p1B1/P3P3/2N3Q1/1PP1B1PP/3R1R1K w - - bm Rxd8; id "ECM.366";
+r4rk1/5p2/p1b1pQpq/8/1B2P3/2NR4/PPP3PP/1K6 w - - bm Rd5; id "ECM.367";
+1r2r1k1/1pqb2pp/p2bp1n1/2p3BQ/3pN3/1P1P2P1/P1P3BP/4RRK1 w - - bm Bd8; id "ECM.370";
+1k2rb1r/pbp1q1pp/2pp4/2PnpP2/Q7/1P3NP1/PB5P/2KR1B1R w - - bm Rxd5; id "ECM.371";
+5qk1/p4p2/1p3Pp1/2p4Q/3rr3/7R/PP6/6RK b - - bm Rh4; id "ECM.373";
+r3k2N/pppbq1pp/5n2/3Ppn2/2BP4/2P3bP/PP2Q1P1/RNB2K1R b q - bm Bh2; id "ECM.376";
+r2q1r2/p1pbppbk/1p3npp/n2P2B1/7Q/2NB1N2/PPP3PP/4RRK1 w - - bm d6; id "ECM.377";
+r3bb2/P1q3k1/Q2p3p/2pPp1pP/2B1P3/2B5/6P1/R5K1 w - - bm Bxe5+; id "ECM.379";
+2k2r1r/1pp1nqbp/p2p1p2/5P2/2PBN3/1P3Q2/1P4PP/R4RK1 w - - bm Rxa6; id "ECM.394";
+r5kr/p3PR1p/1p1p2pq/4n3/8/3B4/P4QPP/4R1K1 w - - bm Rxe5; id "ECM.395";
+2kr3r/pp3p1p/2b1p3/q3Q3/5P2/2P1B3/P1P3PP/1R3RK1 b - - bm Rhg8; id "ECM.397";
+2br1rk1/2qnQ2p/p4pp1/4p3/P1p1P1N1/2Pn1N1P/2B2PP1/1R1R1K2 w - - bm Rxd3; id "ECM.398";
+r3nrk1/p1pb1qpp/3p1p2/2pP1N2/2P1PR2/P1PB4/4Q1PP/5RK1 w - - bm e5; id "ECM.402";
+r4rk1/1b4bp/p1npq1P1/R3p3/8/1N2BP2/1PPQ2P1/4KB1R w K - bm Qxd6; id "ECM.411";
+6k1/2p3p1/2b4p/p4P2/2pR2PK/2P1r2P/1B6/8 b - - bm Bg2; id "ECM.413";
+3rr1k1/1p1qb2p/pP4p1/2p2p2/4RQ2/3P4/1PPB2PP/4R1K1 w - - bm Bc3; id "ECM.420";
+6k1/rnqb3p/5ppQ/2pPp3/p1N1P3/2PB3P/5PP1/1R4K1 w - - bm f4; id "ECM.422";
+6k1/p4p1p/3pqp2/2p1r3/2Pnr1N1/P6P/1P1Q1PP1/3R1RK1 b - - bm Ne2+; id "ECM.427";
+r2b4/pb2q1k1/np1p2r1/1N1Pp2Q/PPN1Pp2/8/2R2BPp/2R4K w - - bm Ncxd6; id "ECM.434";
+3r1r2/1b4bk/p1n3pp/1p2p3/4P3/q1P1QNB1/B4RPP/5RK1 w - - bm Bh4; id "ECM.438";
+r1r3kb/1pqbpp2/p2p1npB/n7/3NP3/1BN2P2/PPPQ2P1/2KR3R w - - bm Bf8; id "ECM.439";
+4rr1k/pbp3bp/3p4/1p5q/3n4/1B1Q2B1/PP1N1N1P/4RRK1 b - - bm Rf3; id "ECM.440";
+4qn1k/1b3rpp/pb2pB2/1pp1P2P/3p1NQ1/P2P2PB/1PP4K/5R2 w - - bm Ng6+; id "ECM.442";
+2b5/2qrrpk1/5Rp1/2p4p/1pB1PR1P/1P1P2P1/5Q1K/8 w - - bm Qb2; id "ECM.443";
+2k5/1p1b4/2n1p1r1/7q/4RP2/3BQN2/2P2K1P/8 w - - bm f5; id "ECM.447";
+2kr3r/p5b1/Pp2R1p1/2q2p1p/2p2Pn1/2P2BP1/1PQB2P1/5R1K b - - bm h4; id "ECM.456";
+2rq2k1/pp1bpp1p/3p1np1/8/3NPPnQ/1BP5/P1P3P1/1K1R3R w - - bm e5; id "ECM.464";
+r1b3k1/3nqp1p/p1n1p1pP/3pP1N1/Pp3QN1/1Pr3P1/2PR1P2/4RBK1 w - - bm Rxd5; id "ECM.465";
+2r1kr2/p1qbbp1Q/3pp3/5p2/1p1N1PB1/6P1/PPP4P/K2RR3 w - - bm Bxf5; id "ECM.466";
+r6k/ppr1qpp1/4n2p/3pP3/3P2R1/3BQ2P/P5PK/5R2 w - - bm Rf6; id "ECM.467";
+2rr2k1/5pn1/1b2q1pp/pP1pP3/2pP1PP1/2R1B2P/2Q3B1/3R3K w - - bm f5; id "ECM.468";
+r4rk1/5ppp/p7/4PR2/P1qnp2Q/4B3/1P4PP/5RK1 w - - bm Rh5; id "ECM.475";
+4r3/pb3pk1/6p1/8/6P1/1PNrB2K/P4P1P/2R5 b - - bm Rexe3+; id "ECM.476";
+2kr2r1/2pqbp1p/p1n1b3/1P1pP3/4n3/1BP1BN2/1P4PP/RN1Q1RK1 b - - bm Bh3; id "ECM.488";
+2b3k1/5qp1/p2r1n1p/3p4/3B4/1RP3QP/P2Nr1P1/3R2K1 b - - bm Ne4; id "ECM.489";
+1r2r1k1/p4ppb/q1pbnn1p/4p3/N1P1P3/pPB2NP1/2Q1RPBP/R5K1 b - - bm Nxe4; id "ECM.491";
+r4r2/1pnqb2k/3p1p1p/p1pPpPpP/2P1N1P1/4BP2/PP1Q4/R2R2K1 w - - bm Bxc5; id "ECM.492";
+rq1r2k1/3nbp1p/p2p2p1/1p1Pp1P1/3B1P2/3B3Q/PPP4P/2KR2R1 w - - bm f5; id "ECM.497";
+r4rk1/1bq1bppp/8/p2pPR2/3B4/1NnP3Q/1P4PP/4R1K1 w - - bm Rh5; id "ECM.498";
+r1b2rk1/pp4bp/2p3p1/4q2n/NQPN1p1P/1P5n/P3PPB1/2BRRK2 b - - bm f3; id "ECM.500";
+r3rk2/pb2bpp1/1n5p/q1pP1B2/1p3B2/5N2/PPQ2PPP/R2R2K1 w - - bm Bc8; id "ECM.503";
+r1bqr2k/ppp2p1p/5b2/3Pn1p1/1PP1Bp2/8/PB2N1PP/R2Q1RK1 w - - bm Nxf4; id "ECM.504";
+1q4k1/p3rppp/3b1n2/8/5P2/4P3/PP1B3P/RNQ3K1 b - - bm Bxf4; id "ECM.505";
+3r1qk1/5p1p/4b1pP/1pRp4/1P1Q4/r5P1/5P2/4RBK1 w - - bm Rxe6; id "ECM.510";
+4qrk1/pp1bbppp/4pn2/2r1Q1B1/7P/2N3R1/PPP2PP1/2KR1B2 w - - bm Bxf6; id "ECM.516";
+r5n1/pppb1B2/2k1pb2/3p2B1/5P2/2N5/PPP3P1/2KR4 w - - bm Nxd5; id "ECM.517";
+2bk3r/3r2pp/p2nQ3/q2R2P1/1p6/8/PPP2P1P/1K3B1R b - - bm Qxd5; id "ECM.525";
+8/4Ppk1/6p1/1p6/1Pb1Q3/6pq/8/6K1 w - - bm Qe5+; id "ECM.544";
+r1b2rk1/ppp2ppp/2n3q1/b2N2N1/2BP4/4p2P/PPP3P1/R2Q1RK1 w - - bm Nxf7; id "ECM.553";
+r1b2rk1/4bnpp/2p5/pp2q3/4N3/PQ2B1P1/1PP3BP/4RRK1 w - - bm Ng5; id "ECM.559";
+2rr2k1/1p3p2/p2n2p1/P2PnNq1/3QP1p1/1RN5/6PP/5RK1 b - - bm Nf3+; id "ECM.560";
+r3k1r1/pb1qpp1p/1pnp1n1B/2p2R2/3PP3/2P3PN/P1P3BP/R2Q3K b q - bm Nxe4; id "ECM.561";
+2r1r1k1/pp1b1ppp/1q6/3P4/7N/Pn1Q4/1P3PPP/1RB2RK1 b - - bm Nxc1; id "ECM.569";
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+3r1rk1/4qp1p/p1bb2p1/2p5/3P4/1P6/PBQN1PPP/2R2RK1 b - - bm Bxh2+; id "ECM.696";
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+2k3r1/ppq2p1p/n1Pb1p2/8/6r1/4BN1b/PPQ2PPP/R3RBK1 b - - bm Bxh2+; id "ECM.698";
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+r3r1k1/p3bppp/q1b2n2/5Q2/1p1B4/1BNR4/PPP3PP/2K2R2 w - - bm Rg3; id "ECM.722";
+4kbr1/pp1bpp1p/3p1p2/3N4/1PBQP3/q7/P1r2PPP/R4RK1 b - - bm Rxg2+; id "ECM.725";
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+r3r1k1/pp3ppp/8/1Nbp3q/3NnBn1/2P5/PPQ2PPP/3R1RK1 b - - bm Ngxf2; id "ECM.735";
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+2rqr1k1/pp2nppp/3p2b1/6B1/2BNn1Q1/P7/1PP2PPP/2KRR3 w - - bm Bxf7+; id "ECM.761";
+r1b2rk1/p6p/2p3Pb/3pp1q1/8/2PB4/PP3PP1/RN1Q1K1R b - - bm Rxf2+; id "ECM.763";
+r2rn3/1p3pk1/p1pNn1pp/q3P3/P7/1PN4P/2QR1PP1/3R2K1 w - - bm Nxf7; id "ECM.764";
+r1b1r1k1/pp2qpbp/2p3p1/2P5/3NnB2/7P/PPQ1PPB1/2RR2K1 b - - bm Nxf2; id "ECM.766";
+rn2r1k1/pp3p1p/3P2p1/2p1bbB1/2B5/2N5/Pq4PP/R2Q1RK1 w - - bm Bxf7+; id "ECM.767";
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+rnb2rk1/pp3pbp/2p3pB/2q5/4P3/1BN5/PPP3PP/R2Q1R1K w - - bm Rxf7; id "ECM.770";
+3qr1k1/1br1bp1p/p3p1pB/1p1nN3/3PB3/7Q/PP3PPP/3RR1K1 w - - bm Nxf7; id "ECM.771";
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+r1b1r3/pp2Npbk/3pp2p/q5p1/2QNPP2/6P1/PPP3P1/2KR3R w - - bm Ndf5; id "ECM.776";
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+2b2r1k/2p3pp/2Nb4/pP5q/2PP4/P4pP1/5P1P/R1BQ2K1 b - - bm Bxg3; id "ECM.803";
+r1bq2k1/pp3r1p/2n1p1p1/3pP3/6Q1/2PB2P1/P4PK1/R1B4R w - - bm Bxg6; id "ECM.804";
+3q1rk1/2r4p/n1p1n1pQ/p2pP3/Np1P2R1/5PN1/PP3KP1/2R5 w - - bm Rxg6+; id "ECM.805";
+2rqr1k1/pb2bp1p/1pn1pnpB/4N3/3P4/P1N3R1/1P3PPP/RB1Q2K1 w - - bm Rxg6+; id "ECM.810";
+3rr1k1/pb2bp1p/3qp1pB/1p2N3/3P2Q1/2P1R3/P4PPP/4R1K1 w - - bm Nxg6; id "ECM.816";
+1Q4R1/r2qbp2/3p1kp1/3Bp2p/8/3PP1P1/5PKP/8 w - - bm Rxg6+; id "ECM.818";
+1rb2rk1/p1p1qppp/2p2n2/3P4/1b3P2/2NB4/PPPBQ1PP/2KR3R b - - bm Ba3; id "ECM.822";
+1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - bm Rxf6; id "ECM.825";
+r1bq1rk1/1p2bppp/p3p3/n3P3/4N3/1P1P1N2/PB4PP/R3QR1K w - - bm Nf6+; id "ECM.829";
+r1bq1rk1/ppp3p1/7p/3P2n1/2PQ1p2/1N5P/PPP2PPK/R1B2R2 b - - bm Nf3+; id "ECM.831";
+3r1b2/p4bkp/1p1P1p2/r3p1p1/2q1N3/2N2P2/1P1R2PP/2QR3K w - - bm Nxf6; id "ECM.832";
+rqbn1rk1/1p3ppp/p3p3/8/4NP2/8/PPP1BQPP/1K1R3R w - - bm Nf6+; id "ECM.833";
+r1b1kb1r/1p4pp/p2ppn2/8/2qNP3/2N1B3/PPP3PP/R2Q1RK1 w kq - bm Rxf6; id "ECM.834";
+2nr2k1/1pq1bppp/p1p5/2p1P1PQ/2P1NP2/1PNR4/P6P/6K1 w - - bm Nf6+; id "ECM.836";
+6nk/pn2qr1r/1pbp1p1p/2p1pPpN/P1P1P1PP/2PP3R/7Q/2BBK2R w K - bm Nxf6; id "ECM.837";
+r1b1kb1r/1p1n1ppp/p2ppn2/6BB/2qNP3/2N5/PPP2PPP/R2Q1RK1 w kq - bm Nxe6; id "ECM.841";
+2r2rk1/1b3ppp/pq2p3/1pbn2N1/3B3P/1B4P1/P1P1QP2/2KRR3 w - - bm Qh5; id "ECM.843";
+3qr1k1/rp3pbp/2p3p1/3p1b2/N1nP4/P2NP3/1PQ2PPP/1BRR2K1 b - - bm Rxe3; id "ECM.846";
+rr4k1/5p1p/n2p1npQ/q1pP4/6P1/2N2P1N/PP1R3P/2K4R b - - bm Rxb2; id "ECM.853";
+1k2bb1r/1p3p1p/p2qpP1p/3pN3/3P1Q2/2RB2P1/PP3P1P/6K1 w - - bm Qc1; id "ECM.854";
+5rk1/5rp1/p2qb3/R2Np2Q/3bP2B/7P/P5PK/1R6 b - - bm Rf1; id "ECM.856";
+3r1rk1/p3q1pp/2Rb4/3P4/8/1P2Qp2/PB3PPP/3R2K1 b - - bm Bxh2+; id "ECM.858";
+1r4k1/1q3pb1/r1b3p1/pp1Qp3/P3P3/1B2BP2/1PP3P1/1K1R3R w - - bm Qd8+; id "ECM.860";
+8/2q1np1k/6p1/1PPn3p/8/P2Q3P/6P1/2R4K b - - bm Nf5; id "ECM.864";
+7R/1p1r4/2b2p2/2Pp1qk1/3P1bp1/3N4/2Q2PB1/6K1 w - - bm Rg8+; id "ECM.866";
+r6r/1pn1b1k1/2p1pq2/2Pp3p/p2P1Pp1/P2BP1P1/1P2QB2/3R2KR w - - bm Rxh5; id "ECM.867";
+2kr1br1/ppp2p1p/2n1p1q1/2Nn4/3P4/1Q2PB2/PP1B1P1P/2R1K2R b K - bm Qg1+; id "ECM.875";
+2kr3r/1Rp1bpp1/p6q/Q3P3/2P5/3p1NP1/P3P2P/1R4K1 b - - bm Qe3+; id "ECM.877";
+6k1/1R4pp/2p5/8/P1rNp3/6Pb/4PK2/8 w - - bm a5; id "ECM.878";
+r2r2k1/pp3ppp/2q5/2p5/2P1P1n1/P4P1b/1BQ1BP1P/R3R2K b - - bm Rd2; id "ECM.879";