MESON Chess Problem Database

Problem Display
PID: 142911 (1nR1R3/B2p4/rr1N1K2/p2p2Np/1P1k1n2/5Bp1/2P2qP1/b4bQ1 w - - 0 1)

Francey, James

Belfast Newsletter, 1930

1nR1R3/B2p4/rr1N1K2/p2p2Np/1P1k1n2/5Bp1/2P2qP1/b4bQ1

#2

11 + 13

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Qxe3#
    • 1...Be2
      • 2.Qxa1#
    • 1...Bxg2
      • 2.Qxa1#
    • 1...Bd3
      • 2.Qxa1#
    • 1...Bc4
      • 2.Qxa1#
    • 1...Bb5
      • 2.Qxa1#
    • 1...Se6
      • 2.Sf5#
  • Tries
    • 1.Rc4+?
      • 1...Bxc4
        • 2.Qxa1#
      • 1...dxc4!
  • Keys
    • 1.Be2!
      • threat
        • 2.Sf3#
      • 1...Se6+
        • 2.Sf5#
      • 1...Bxe2
        • 2.Qxa1#
      • 1...Bxg2
        • 2.Qxa1#
      • 1...Sc6
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(c);OGATE::QAB1(A),XQ(c)
    • B(b);OGATE::QAB(A),XB(a)
    • B(b);OGATE,XP(C)::QAB(A),XB(a)
    • S(f);N_PINS(G),P_PINB(D)::S(G)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • B(b);OGATE,XR(J)::QAB(A),XB(a)
      • Refutation
        • P(h);XR(J)
  • Actual
    • B(D);
    • Threat
      • S(F)
    • Vars
      • S(f);CHECK,N_PINS(G)::S(G)
      • B(b);OGATE,XB(D)::QAB(A),XB(a)
      • B(b);OGATE,XP(C)::QAB(A),XB(a)
      • S(m);N_PINS(G)::S(G)
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