MESON Chess Problem Database

Problem Display
PID: 79663 (1b6/7K/7p/6R1/5p1k/8/3Q2P1/3n2R1 w - - 0 1)

Wigan, TK

The Field, 1938

(First published on Sat Jan 29 1938)

1b6/7K/7p/6R1/5p1k/8/3Q2P1/3n2R1

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Qxf4#
  • Tries
    • 1.Kxh6?
      • threat
        • 2.Rh1#
      • 1...Sf2
        • 2.Qxf2#
      • 1...f3!
    • 1.Rg6?
      • threat
        • 2.Rh1#
      • 1...Kh5
        • 2.Rh1#
      • 1...f3
        • 2.Qxh6#
      • 1...Sf2!
    • 1.Rg7?
      • threat
        • 2.Rh1#
      • 1...Kh5
        • 2.Rh1#
      • 1...f3
        • 2.Qxh6#
      • 1...Sf2!
    • 1.Rg8?
      • threat
        • 2.Rh1#
      • 1...Kh5
        • 2.Rh1#
      • 1...f3
        • 2.Qxh6#
      • 1...Sf2!
    • 1.g3+?
      • 1...Kh3
        • 2.Rh1#
        • 2.Qg2#
      • 1...fxg3
        • 2.Rh1#
      • 1...Kxg5!
  • Keys
    • 1.g4!
      • threat
        • 2.Rh5#
      • 1...Kh3
        • 2.Rh5#
      • 1...Kxg5
        • 2.Qd8#
      • 1...hxg5
        • 2.Qh2#
      • 1...fxg4 ep
        • 2.Rh1#
      • 1...h5
        • 2.Rxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD::QAR2(B),XP(b)
  • Tries
    • Try
      • K(E);P-FLIGHT,XP(d)
      • Threat
        • R(A)
      • Vars
        • S(a);N_GUARD::QAB(B),XS(a)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Threat
        • R(A)
      • Vars
        • K(c);P-FLIGHT::R(A)
        • P(b);OGATE::QAR2(B),XP(d)
      • Refutation
        • S(a);
    • Try
      • R(D);
      • Threat
        • R(A)
      • Vars
        • K(c);P-FLIGHT::R(A)
        • P(b);OGATE::QAR2(B),XP(d)
      • Refutation
        • S(a);
    • Try
      • R(D);
      • Threat
        • R(A)
      • Vars
        • K(c);P-FLIGHT::R(A)
        • P(b);OGATE::QAR2(B),XP(d)
      • Refutation
        • S(a);
    • Try
      • P(C);CHECK
      • Vars
        • P(b);XP(C)::R(A)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT,XR(D)
  • Actual
    • P(C);
    • Threat
      • R1(D)
    • Vars
      • K(c);P-FLIGHT::R(D)
      • K(c);OGATEB,P_SPINP(b),S_FLIGHT,XR(D)::QAB(B)
      • P(d);SBLOCK,XR(D)::QAR2(B)
      • P(b);EP,XP(C)::R(A)
      • P(d);::R1(D),XP(d)
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