MESON Chess Problem Database

Problem Display
PID: 273196 (1r2R3/nN4pK/1p2P1N1/3k3P/p1R4Q/1pb5/q2rp3/1B5b w - - 0 1)

Wynne, Frank Wilson

Liverpool Courier, 1912

(First published on Fri Jul 12 1912)

1r2R3/nN4pK/1p2P1N1/3k3P/p1R4Q/1pb5/q2rp3/1B5b

#2

9 + 12

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
    • 1...b5
      • 2.Rc5#
  • Tries
    • 1.Sf4+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Kxc4!
    • 1.Be4+?
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Kxc4!
    • 1.Rd8+?
      • 1...Kxe6
        • 2.Qe7#
      • 1...Rxd8!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Qc4#
      • 1...Rxb7
        • 2.Qd8#
      • 1...Be4
        • 2.Qxe4#
      • 1...Rd4
        • 2.Qg5#
      • 1...Bd4
        • 2.Qxh1#
      • 1...Sc6
        • 2.Rd7#
      • 1...b2
        • 2.Bxa2#
      • 1...b5
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,P_PINS(F)::QAB1(C),XB(a)
    • P(i);N_GUARD::R1(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_GUARD,P-FLIGHT::QAR2(C)
      • Refutation
        • K(h);S_FLIGHT,XR(B)
    • Try
      • B(A);CHECK
      • Vars
        • B(a);OGATE,P_PINS(F),XB(A)::QAB1(C),XB(a)
      • Refutation
        • K(h);S_FLIGHT,XR(B)
    • Try
      • R(I);CHECK
      • Vars
        • K(h);N_GUARD,S_CUTR(l),S_FLIGHT,XP(E)::QAR1(C)
      • Refutation
        • R(l);XR(I)
  • Actual
    • R(B);
    • Threat
      • QAB1(C)
    • Vars
      • R(l);N_GUARD,XS(G)::QAR(C)
      • B(a);N_GUARD,P_PINS(F)::QAB1(C),XB(a)
      • R(c);SBLOCK,S_CUTB(f)::QAR(C)
      • B(f);SBLOCK::QAB(C),XB(a)
      • S(j);SBLOCK::R(B)
      • P(e);OGATEB::B(A),XQ(b)
      • P(i);N_GUARD::R1(B)
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