MESON Chess Problem Database

Problem Display
PID: 76691 (8/7Q/4B3/4p1k1/5r2/6Bp/5R2/7K w - - 0 1)

Butwillo, Brother

The Tablet, 1944

(First published on Sat Mar 25 1944)

8/7Q/4B3/4p1k1/5r2/6Bp/5R2/7K

#2

5 + 4

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Rf5#
    • 1...Rh4
      • 2.Bxh4#
    • 1...Rf6
      • 2.Bh4#
    • 1...Rf7
      • 2.Bh4#
    • 1...Rf8
      • 2.Bh4#
  • Tries
    • 1.Bxf4+?
      • 1...Kf6
        • 2.Qf7#
      • 1...exf4!
    • 1.Bf7?
      • threat
        • 2.Qg6#
      • 1...Kg4
        • 2.Qg6#
      • 1...Kf6
        • 2.Bh4#
      • 1...Rf6
        • 2.Qh4#
        • 2.Qh5#
      • 1...Rxf7!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Qg7#
      • 1...Kxg4
        • 2.Qg6#
      • 1...Kf6
        • 2.Bh4#
      • 1...Rxg4
        • 2.Rf5#
      • 1...Rf6
        • 2.Qh5#
      • 1...Rf7
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);OGATE,SBLOCK::R1(B)
    • R(b);N_GUARD::B(C),XR(b)
    • R(b);N_GUARD::B(C)
  • Tries
    • Try
      • B(C);CHECK,XR(b)
      • Vars
        • K(d);S_FLIGHT::QAR1(E)
      • Refutation
        • P(c);XB(C)
    • Try
      • B(D);
      • Threat
        • QAR1(E)
      • Vars
        • K(d);P-FLIGHT::QAR2(E)
        • K(d);P_SPINR(b),S_FLIGHT::B(C)
      • Refutation
        • R(b);XB(D)
  • Actual
    • B(D);
    • Threat
      • QAR2(E)
    • Vars
      • K(d);P-FLIGHT,XB(D)::QAR2(E)
      • K(d);P_SPINR(b),S_FLIGHT::B(C)
      • R(b);OGATE,SBLOCK,XB(D)::R1(B)
      • R(b);::QAR1(E)
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