MESON Chess Problem Database

Problem Display
PID: 100489 (8/3br2r/3NNRp1/4kB1Q/3p4/3R4/4K3/B7 w - - 0 1)

Goldschmidt, Josef

Loe Ping, JMM

Israel Ring Ty., 1963

8/3br2r/3NNRp1/4kB1Q/3p4/3R4/4K3/B7

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Bxd4#
  • Tries
    • 1.Sc4+?
      • 1...Kxf6
        • 2.Qxg6#
      • 1...Kd5!
    • 1.Bxg6+?
      • 1...Kxd6
        • 2.Qc5#
      • 1...Kxf6
        • 2.Qf5#
      • 1...Rxh5!
    • 1.Qh2+?
      • 1...Kd5
        • 2.Be4#
      • 1...Kxf6
        • 2.Bxd4#
      • 1...Rxh2+!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Se6#
      • 1...Kf4+
        • 2.Be6#
      • 1...Kd5+
        • 2.Be4#
      • 1...Kxf6+
        • 2.Se6#
      • 1...Re6
        • 2.Sxe6#
      • 1...Be6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P_PINS(G),S_FLIGHT,XR(H)::B(A),XP(a)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P_PINS(G),S_FLIGHT,XR(H)::QAR1(E),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_PINS(G)
    • Try
      • B(D);CHECK,XP(c)
      • Vars
        • K(b);OGATE,P_PINS(G),S_FLIGHT,XS(F)::QAB1(E)
        • K(b);P_PINS(G),S_FLIGHT,XR(H)::QAR1(E)
      • Refutation
        • R(f);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT,P_PINS(G)::B(D)
        • K(b);P_PINS(G),S_FLIGHT,XR(H)::B(A),XP(a)
      • Refutation
        • R(f);CHECK,XQ(E)
  • Actual
    • S(G);XP(a)
    • Threat
      • B(A)+S(G)
    • Vars
      • K(b);CHECK,S_FLIGHT::R(H)+B(D)
      • K(b);CHECK,P-FLIGHT::QAR(E)+B(D),DCHECK
      • K(b);CHECK,S_FLIGHT,XR(H)::B(A)+S(G)
      • R(e);::B(A)+S(G),XR(e)
      • B(d);::B(A)+S(G),XB(d)
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