MESON Chess Problem Database

Problem Display
PID: 221538 (1b6/B3p3/K2p4/7R/Rp1pkpp1/3NP3/2P5/1B2NbQ1 w - - 0 1)

Whalley, JR

British Chess Magazine, 1927

1b6/B3p3/K2p4/7R/Rp1pkpp1/3NP3/2P5/1B2NbQ1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3+
      • 2.cxd3#
    • 1...b3
      • 2.Rxd4#
    • 1...dxe3
      • 2.Rxb4#
    • 1...fxe3
      • 2.Qxg4#
  • Keys
    • 1.c4!
      • threat
        • 2.Sc5#
      • 1...Bxd3
        • 2.Bxd3#
      • 1...dxe3
        • 2.Sf2#
      • 1...fxe3
        • 2.Qxg4#
      • 1...bxc4 ep
        • 2.Rxd4#
      • 1...dxc4 ep
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);CHECK,OGATE,XS(E)::P(D),XB(a)
    • P(b);OGATE,P_SPINP(c)::R1(G),XP(c)
    • P(c);OGATEB,P_SPINP(b),XP(F)::R(G),XP(b)
    • P(e);OGATEB,SBLOCK,XP(F)::QAR2(C),XP(f)
  • Actual
    • P(D);N_SPINS(E)
    • Threat
      • B(A)+S(E),DCHECK
    • Vars
      • B(a);OGATE,P_PINP(D),P_SPINB(a),XS(E)::B(A),XB(a)
      • P(c);XP(F)::B(A)+S(E),DCHECK
      • P(e);OGATEB,SBLOCK,XP(F)::QAR2(C),XP(f)
      • P(b);EP,OGATE,P_PINS(E),P_SPINP(c),XP(D)::R1(G),XP(c)
      • P(c);EP,OGATEB,P_PINS(E),P_SPINP(b),XP(D)::R(G),XP(b)
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