MESON Chess Problem Database

Problem Display
PID: 274693 (8/1BB2p2/2R1p3/1p1P1r2/4kPQn/2P1P3/2K1R3/8 w - - 0 1)

Doukhan, Gerard

The Problemist Supplement, 2023

8/1BB2p2/2R1p3/1p1P1r2/4kPQn/2P1P3/2K1R3/8

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.e4#
    • 1...Rxd5
      • 2.f5#
    • 1...Sg2
      • 2.Qxg2#
    • 1...Sg6
      • 2.Qg2#
    • 1...b4
      • 2.Rc4#
  • Tries
    • 1.Rxe6+?
      • 1...Re5
        • 2.Rxe5#
        • 2.fxe5#
        • 2.f5#
        • 2.d6#
      • 1...fxe6!
    • 1.d6?
      • threat
        • 2.Rc4#
      • 1...Kd5
        • 2.e4#
      • 1...Rxf4
        • 2.Rc5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rd5!
  • Keys
    • 1.dxe6!
      • threat
        • 2.Rc4#
      • 1...Kd5
        • 2.e4#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rd5
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(a);OGATE,S_FLIGHT,XP(G)::P(D)
    • R(d);OGATE,SBLOCK,XP(G)::QAR(F)+P(E)
    • S(b);N_GUARD::QAB(F),XS(b)
    • S(b);N_GUARD::QAB(F)
    • P(c);N_GUARD::R(H)
  • Tries
    • Try
      • R(H);CHECK,XP(e)
      • Refutation
        • P(f);XR(H)
    • Try
      • P(G);
      • Threat
        • B(I)+R(H),DCHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::P(D)
        • R(d);N_GUARD,P_SPINR(d),XP(E)::B(I)+R(H)
        • R(d);N_GUARD,P_PINP(C)::B(I)+R(H),XR(d)
      • Refutation
        • R(d);
  • Actual
    • P(G);XP(e)
    • Threat
      • B(I)+R(H),DCHECK
    • Vars
      • K(a);OGATE,S_FLIGHT::P(D)
      • R(d);N_GUARD,P_PINP(C)::B(I)+R(H),XR(d)
      • R(d);OGATE,SBLOCK::QAR(F)+P(E)
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