MESON Chess Problem Database

Problem Display
PID: 242818 (3R1bB1/1pr5/p2nnPPp/N2k4/1Qp2P2/2Pp2N1/R7/4K1B1 w - - 0 1)

Bakcsi, Gyorgy

Schach, 1989

3R1bB1/1pr5/p2nnPPp/N2k4/1Qp2P2/2Pp2N1/R7/4K1B1

#2

12 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rd7
      • 2.Qc5#
    • 1...Re7
      • 2.Rxd6#
      • 2.Qc5#
      • 2.Qxd6#
      • 2.Qxc4#
    • 1...Rf7
      • 2.Qxc4#
    • 1...Rg7
      • 2.Qc5#
      • 2.Qxc4#
    • 1...Rh7
      • 2.Qc5#
      • 2.Qxc4#
    • 1...Bg7
      • 2.Rxd6#
      • 2.Qxd6#
    • 1...d2+
      • 2.Rxd2#
  • Tries
    • 1.Re2?
      • threat
        • 2.Bxe6#
        • 2.Re5#
      • 1...d2+
        • 2.Rxd2#
      • 1...Re7
        • 2.Re5#
        • 2.Rxd6#
        • 2.Qc5#
        • 2.Qxd6#
        • 2.Qxc4#
      • 1...Rf7
        • 2.Re5#
        • 2.Qxc4#
      • 1...dxe2!
    • 1.Qb2?
      • threat
        • 2.Qg2#
      • 1...d2+
        • 2.Qxd2#
      • 1...Rd7!
    • 1.Qb5+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...axb5!
    • 1.Qb6?
      • threat
        • 2.Qd4#
      • 1...d2+
        • 2.Rxd2#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rf7!
    • 1.Qxb7+?
      • 1...Rc6
        • 2.Qxc6#
      • 1...Rxb7!
  • Keys
    • 1.Rh2!
      • threat
        • 2.Rh5#
      • 1...d2+
        • 2.Rxd2#
      • 1...Rd7
        • 2.Qc5#
      • 1...Rf7
        • 2.Qxc4#
      • 1...h5
        • 2.Rxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(i);N_GUARD::QAR1(F),XR(i)
    • R(i);N_GUARD,N_SPINS(e),P_SPINS(f)::QAR1(F)
    • R(i);N_GUARD::QAB1(F),XP(b)
    • P(a);CHECK,OGATEB::R(C),XP(a)
  • Tries
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK,OGATEB::R(C),XP(a)
      • Refutation
        • P(a);XR(C)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • P(a);CHECK,OGATEB::QAR(F),XP(a)
      • Refutation
        • R(i);N_SPINS(e),P_SPINS(f)
    • Try
      • Q(F);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAR1(F),XR(i)
      • Refutation
        • P(d);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • P(a);CHECK,OGATEB::R(C),XP(a)
        • R(i);N_GUARD::QAR1(F),XR(i)
      • Refutation
        • R(i);
    • Try
      • Q(F);CHECK,XP(h)
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAB1(F),XR(i)
      • Refutation
        • R(i);XQ(F)
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • P(a);CHECK,OGATEB::R(C),XP(a)
      • R(i);N_GUARD,N_SPINS(e),P_SPINS(f)::QAR1(F)
      • R(i);N_GUARD::QAB1(F),XP(b)
      • P(g);::R(C),XP(g)
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