MESON Chess Problem Database

Problem Display
PID: 80450 (8/4q2n/4p2B/2r1r1n1/4bkBN/3p2R1/4RK2/8 w - - 0 1)

Wigan, TK

The Field, 1945

(First published on Sat Apr 21 1945)

8/4q2n/4p2B/2r1r1n1/4bkBN/3p2R1/4RK2/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sg6#
    • 1...Bh1
      • 2.Sg6#
    • 1...Bg2
      • 2.Sxg2#
      • 2.Sg6#
    • 1...Bf3
      • 2.Sg6#
    • 1...Bd5
      • 2.Sg6#
    • 1...Bf5
      • 2.Sg2#
    • 1...Bc6
      • 2.Sg6#
    • 1...Bg6
      • 2.Sg2#
      • 2.Sxg6#
    • 1...Bb7
      • 2.Sg6#
    • 1...Ba8
      • 2.Sg6#
  • Tries
    • 1.Rxe4+?
      • 1...Rxe4
        • 2.Sg6#
      • 1...Kxe4!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Rg4#
      • 1...Rxf5
        • 2.Sg6#
      • 1...Bxf5
        • 2.Sg2#
      • 1...exf5
        • 2.Sg6#
      • 1...Red5
        • 2.Rxe4#
      • 1...Sf6
        • 2.Bxg5#
      • 1...Bf3
        • 2.Rxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(e);S_CUTB(b)::S(E)
    • B(b);N_GUARD::S(E)
  • Tries
    • Try
      • R(A);CHECK,XB(b)
      • Vars
        • R(e);SBLOCK,XR(A)::S(E)
      • Refutation
        • K(c);N_SPINS(f),P-FLIGHT,XR(A)
  • Actual
    • B(D);
    • Threat
      • R1(C)
    • Vars
      • R(e);SBLOCK,XB(D)::S(E)
      • B(b);N_GUARD,SBLOCK,XB(D)::S(E)
      • P(g);SBLOCK,XB(D)::S(E)
      • R(e);N_GUARD::R1(A),XB(b)
      • S(i);N_GUARD,S_CUTQ(h)::B(F),XS(f)
      • B(b);N_GUARD::R1(C),XB(b)
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