MESON Chess Problem Database

Problem Display
PID: 148222 (2r5/B5n1/1q1P2K1/1P1rp3/1QBkN3/1P1P4/8/bb2R3 w - - 0 1)

Ashkenasi, Z

Gurevitch, Aaron

1st HM., Israel Ring Ty., 1985

2r5/B5n1/1q1P2K1/1P1rp3/1QBkN3/1P1P4/8/bb2R3

#2

10 + 8

721 Variantim 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6+
      • 2.Qxd6#
    • 1...Rxc4
      • 2.Qxc4#
    • 1...Bc3
      • 2.Qxc3#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Re4#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...e4
        • 2.Rxe4#
      • 1...Bxd3+!
    • 1.Bxd5+?
      • 1...Kxd3
        • 2.Qd2#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Kxd5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Re4#
      • 1...Qxd6+
        • 2.Se6#
      • 1...Rxd6+
        • 2.Be6#
      • 1...Bxd3+
        • 2.Bxd3#
      • 1...e4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(d);CHECK,OGATE,XP(H)::QAR2(D),XR(d)
    • R(h);OGATE,P_SPINR(h),XB(E)::QAR1(D),XR(h)
    • B(a);N_GUARD::QAB1(D),XB(a)
  • Tries
    • Try
      • S(F);N_SPINP(H),P_SPINP(C)
      • Threat
        • R1(A)
      • Vars
        • R(h);OGATE,P_SPINR(h),XB(E)::QAR1(D),XR(h)
        • P(e);N_PINP(C)::R1(A),XP(e)
      • Refutation
        • B(b);CHECK,XP(C)
    • Try
      • B(E);CHECK,XR(d)
      • Vars
        • K(c);N_SPINQ(f),OGATEB,P-FLIGHT,XP(C)::QAR1(D)
        • R(h);N_GUARD,P_SPINR(h)::QAR1(D),XR(h)
      • Refutation
        • K(c);N_SPINQ(f),P-FLIGHT,XB(E)
  • Actual
    • S(F);N_PINQ(f),N_SPINP(H),P_SPINP(C)
    • Threat
      • R1(A)
    • Vars
      • Q(f);CHECK,XP(H)::B(J)+S(F),DCHECK
      • R(d);CHECK,OGATE,XP(H)::QAR(D)+B(E)
      • B(b);CHECK,OGATE,P_PINP(H),XP(C)::QAR(D)+B(E),XB(b)
      • P(e);N_PINP(C),P_PINP(H)::R1(A),XP(e)
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