MESON Chess Problem Database

Problem Display
PID: 59674 (B7/1n6/N6N/p2ppQK1/3k2bR/r2P1P2/2PBnp2/4R1q1 w - - 0 1)

Ancin, Andrej

3rd HM., Sachove umeni (Ceskoslovensky sach), 1967

B7/1n6/N6N/p2ppQK1/3k2bR/r2P1P2/2PBnp2/4R1q1

#2

11 + 10

3772 FIDE Album (1965-1967) 1976
14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qxd3#
    • 1...Sc1
      • 2.Qxe5#
    • 1...Sc3
      • 2.Be3#
      • 2.Qxe5#
    • 1...Sg3
      • 2.Qxe5#
    • 1...Sf4
      • 2.Qxe5#
    • 1...e4
      • 2.Qf6#
  • Tries
    • 1.Rxg4+?
      • 1...Sf4
        • 2.Qxe5#
      • 1...e4
        • 2.Qf6#
      • 1...Qxg4+!
    • 1.Qe6?
      • threat
        • 2.Sf5#
      • 1...Sg3
        • 2.Qxe5#
      • 1...Sf4
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qxd5#
      • 1...e4
        • 2.Qf6#
      • 1...Rxd3!
    • 1.Qd7?
      • threat
        • 2.Sf5#
      • 1...Rxd3
        • 2.Qa4#
      • 1...e4
        • 2.Qg7#
      • 1...Sf4
        • 2.Re4#
      • 1...Sd6
        • 2.Qa7#
      • 1...Sg3!
    • 1.c3+?
      • 1...Sxc3
        • 2.Be3#
      • 1...Rxc3!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sf5#
      • 1...e4
        • 2.Qh8#
      • 1...Sg3
        • 2.Be3#
      • 1...Sf4
        • 2.Be3#
      • 1...Sd6
        • 2.Qc5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(d);OGATE,XP(D)::QAR1(G),XR(d)
    • S(b);::QAB1(G),XP(i)
    • S(b);N_SPINB(f)::QAB1(G),XP(i)
    • P(i);N_SPINB(f),OGATEB::QAB(G)
  • Tries
    • Try
      • R(F);CHECK,P_SPINR(F),XB(f)
      • Vars
        • S(b);P_SPINS(b)::QAB1(G),XP(i)
        • P(i);P_SPINP(i),S_CUTQ(a),S_CUTS(b)::QAB(G)
      • Refutation
        • Q(a);CHECK,XR(F)
    • Try
      • Q(G);
      • Threat
        • S(J)
      • Vars
        • S(b);::QAB1(G),XP(i)
        • S(b);N_SPINB(f)::QAB1(G),XP(i)
        • S(j);::QAR1(G),XP(h)
        • P(i);N_SPINB(f),OGATEB::QAB(G)
      • Refutation
        • R(d);XP(D)
    • Try
      • Q(G);P_PINP(h)
      • Threat
        • S(J)
      • Vars
        • R(d);N_GUARD,XP(D)::QAR(G)
        • P(i);N_SPINB(f),OGATEB::QAB(G)
        • S(b);N_SPINB(f),OGATE::R1(A)
        • S(j);N_SPINP(h),OGATE::QAB(G)
      • Refutation
        • S(b);
    • Try
      • P(B);CHECK
      • Vars
        • S(b);SBLOCK,XP(B)::B(C)
      • Refutation
        • R(d);XP(B)
  • Actual
    • Q(G);
    • Threat
      • S(J)
    • Vars
      • P(i);N_SPINB(f),OGATEB::QAB(G)
      • S(b);::B(C)
      • S(b);N_SPINB(f)::B(C)
      • S(j);N_GUARD::QAB1(G)
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