MESON Chess Problem Database

Problem Display
PID: 155362 (b7/4BPn1/1r1NBRK1/bN2kpp1/3R4/1prP4/1n6/Q7 w - - 0 1)

Shiel, George

Leeds Mercury Weekly Supplement, 1880

(First published on Sat Feb 14 1880)

b7/4BPn1/1r1NBRK1/bN2kpp1/3R4/1prP4/1n6/Q7

#2

10 + 10

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qe1#
    • 1...Rxd6
      • 2.Bxd6#
    • 1...Rb7
      • 2.Qe1#
    • 1...Sxe6
      • 2.Rxf5#
  • Tries
    • 1.Re4+?
      • 1...fxe4
        • 2.d4#
      • 1...Bxe4!
  • Keys
    • 1.Rg4!
      • threat
        • 2.d4#
      • 1...Rxd3
        • 2.Sc4#
      • 1...Rxd6
        • 2.Bxd6#
      • 1...Sxd3
        • 2.Sc4#
      • 1...Sxe6
        • 2.Rxf5#
      • 1...Rc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(h);S_CUTB(j)::QAR(A)
    • R(h);OGATE,XS(E)::B(I),XR(h)
    • S(i);N_GUARD,SBLOCK,XB(F)::R1(G),XP(f)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • P(f);XR(C)::P(B)
      • Refutation
        • B(j);XR(C)
  • Actual
    • R(C);
    • Threat
      • P(B)
    • Vars
      • R(c);N_GUARD,P_SPINS(a),XP(B)::S(E)
      • R(h);OGATE,XS(E)::B(I),XR(h)
      • S(a);N_GUARD,P_SPINR(c),XP(B)::S(E)
      • S(i);N_GUARD,SBLOCK,XB(F)::R1(G),XP(f)
      • R(c);N_GUARD,P_SPINS(a)::S(E),XR(c)
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