MESON Chess Problem Database

Problem Display
PID: 147374 (2r5/7n/4pp1b/nRB1kp2/5Np1/1p3PP1/1P4N1/R3K3 w Q - 0 1)

Boyle, Rene

Thema Danicum, 1977

2r5/7n/4pp1b/nRB1kp2/5Np1/1p3PP1/1P4N1/R3K3

#2

9 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Rd1?
      • threat
        • 2.Sg6#
        • 2.Bd6#
      • 1...Rxc5
        • 2.Sg6#
        • 2.Rxc5#
      • 1...Bxf4
        • 2.Bd6#
        • 2.gxf4#
      • 1...Rg8
        • 2.Bg1#
        • 2.Bf2#
        • 2.Ba3#
        • 2.Be3#
        • 2.Bb4#
        • 2.Bb6#
        • 2.Bd6#
        • 2.Ba7#
        • 2.Be7#
        • 2.Bf8#
      • 1...Sf8
        • 2.Bd6#
      • 1...gxf3!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Re1#
      • 1...Rxc5+
        • 2.Rxc5#
      • 1...Bxf4+
        • 2.gxf4#
      • 1...Sc4
        • 2.Bd6#
      • 1...Sg5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);::R(H)+B(I),DCHECK
      • Refutation
        • P(b);XP(E)
  • Actual
    • K(B);0-0-0,P_SPINB(I),P_SPINS(G)
    • Threat
      • R(A)
    • Vars
      • R(j);CHECK,OGATE,P_SPINR(j),XB(I)::R(H),XR(j)
      • B(h);CHECK,OGATE,XS(G)::P(F),XB(h)
      • S(c);N_PINB(I)::R(H)+B(I),DCHECK
      • S(i);N_PINS(G)::S(G)
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