MESON Chess Problem Database

Problem Display
PID: 22574 (6Rb/7B/K2R1B2/3PP2p/2P2k1P/2p2P2/3NqpP1/2Q2N1n w - - 0 1)

Bakcsi, Gyorgy

Szabo, Tibor

3rd Prize, Sakkelet, 1993

6Rb/7B/K2R1B2/3PP2p/2P2k1P/2p2P2/3NqpP1/2Q2N1n

#2

14 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1
      • 2.Sxf1#
    • 1...Qxf3
      • 2.Sxf3#
    • 1...Qxc4+
      • 2.Sxc4#
    • 1...Qe4
      • 2.Sxe4#
    • 1...Qxe5
      • 2.Se4#
  • Tries
    • 1.Sb1+?
      • 1...Qe3
        • 2.Qxe3#
      • 1...Qd2!
    • 1.Sb3+?
      • 1...Qe3
        • 2.Qxe3#
      • 1...Qd2!
    • 1.Se4+?
      • 1...Qe3
        • 2.Qxe3#
      • 1...Qd2!
    • 1.Re6?
      • threat
        • 2.Bg5#
      • 1...Qxc4+
        • 2.Sxc4#
      • 1...Qxf1
        • 2.Sxf1#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...Qxe5
        • 2.Se4#
      • 1...Bxf6!
    • 1.Re8?
      • threat
        • 2.Bg5#
      • 1...Qxc4+
        • 2.Sxc4#
      • 1...Qxf1
        • 2.Sxf1#
      • 1...Qxe5
        • 2.Se4#
      • 1...Bxf6
        • 2.Rxf6#
      • 1...Qxf3!
  • Keys
    • 1.Qxc3!
      • threat
        • 2.Bg5#
      • 1...Qxc4+
        • 2.Qxc4#
      • 1...Qxf1
        • 2.Qd4#
      • 1...Qxf3
        • 2.Qxf3#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Bxf6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(b);XS(B)::QAB(A)+S(C),XQ(b)
    • Q(b);N_PINP(F),XP(E)::QAB(A)+S(C),XQ(b)
    • Q(b);CHECK,XP(F)::QAB(A)+S(C),XQ(b)
    • Q(b);N_GUARD,N_PINP(F)::QAB(A)+S(C),XQ(b)
    • Q(b);N_GUARD,N_PINP(F),XP(I)::QAB(A)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • Q(b);N_GUARD,N_PINP(F),P_SPINQ(b)::QAB1(A),XQ(b)
      • Refutation
        • Q(b);N_PINP(F),P_SPINQ(b)
    • Try
      • S(C);CHECK
      • Vars
        • Q(b);N_GUARD,N_PINP(F),P_SPINQ(b)::QAB1(A),XQ(b)
      • Refutation
        • Q(b);N_PINP(F),P_SPINQ(b)
    • Try
      • S(C);CHECK
      • Vars
        • Q(b);N_GUARD,N_PINP(F),P_SPINQ(b)::QAB1(A),XQ(b)
      • Refutation
        • Q(b);N_PINP(F),P_SPINQ(b)
    • Try
      • R(K);
      • Threat
        • B(L)
      • Vars
        • Q(b);CHECK,XP(F)::QAB(A)+S(C),XQ(b)
        • Q(b);XS(B)::QAB(A)+S(C),XQ(b)
        • Q(b);N_PINP(F),XP(E)::QAB(A)+S(C),XQ(b)
        • Q(b);N_GUARD,N_PINP(F),XP(I)::QAB(A)+S(C)
      • Refutation
        • B(g);XB(L)
    • Try
      • R(N);
      • Threat
        • B(L)
      • Vars
        • Q(b);CHECK,XP(F)::QAB(A)+S(C),XQ(b)
        • Q(b);XS(B)::QAB(A)+S(C),XQ(b)
        • Q(b);N_GUARD,N_PINP(F),XP(I)::QAB(A)+S(C)
        • B(g);OGATE,XB(L)::R(K),XB(g)
      • Refutation
        • Q(b);N_PINP(F),XP(E)
  • Actual
    • Q(A);XP(d)
    • Threat
      • B(L)
    • Vars
      • Q(b);CHECK,OGATE,XP(F)::QAR(A),XQ(b)
      • Q(b);N_GUARD,XS(B)::QAR2(A)
      • Q(b);N_PINP(F),OGATE,XP(E)::QAR1(A),XQ(b)
      • Q(b);N_PINP(F),OGATE,XP(I)::QAB1(A),XQ(b)
      • B(g);OGATE,XB(L)::R(K),XB(g)
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Developed and maintained by Brian Stephenson.
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