MESON Chess Problem Database

Problem Display
PID: 218567 (2Q5/4B3/5p2/1RN2P2/Rb3k2/2P2P2/4P3/5K2 w - - 0 1)

Crake, James

Sp. Prize, Jamaica Journal, 1881

2Q5/4B3/5p2/1RN2P2/Rb3k2/2P2P2/4P3/5K2

#2

10 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sd3#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Se6#
      • 1...Ke5
        • 2.Sd3#
      • 1...Kg5!
    • 1.Bxf6?
      • 1...Ke3
        • 2.Bg5#
      • 1...Kg3!
  • Keys
    • 1.Qh8!
      • 1...Ke3
        • 2.Qh6#
      • 1...Kg3
        • 2.Bd6#
      • 1...Ke5
        • 2.Sd3#
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Kg5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(a),S_FLIGHT::R(F)+S(G),DCHECK
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • S(G)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::R(F)+S(G),DCHECK
      • Refutation
        • K(b);N_SPINB(a),P_SPINP(c),S_FLIGHT
    • Try
      • B(I);XP(c)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::B(I)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
  • Actual
    • Q(J);
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT::QAB(J)
      • K(b);N_SPINB(a),S_FLIGHT::B(I)
      • K(b);N_SPINB(a),P_SPINP(c),S_FLIGHT::R(F)+S(G),DCHECK
      • K(b);N_SPINB(a),OGATEB,P-FLIGHT,XP(H)::QAR1(J),XP(c)
      • K(b);N_SPINB(a),P_SPINP(c),S_FLIGHT::S(G)
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