MESON Chess Problem Database

Problem Display
PID: 76804 (8/3Q4/np6/1B2B3/1kP5/1p6/1p1P4/1K6 w - - 0 1)

Butwillo, Brother

The Tablet, 1945

(First published on Sat Sep 22 1945)

8/3Q4/np6/1B2B3/1kP5/1p6/1p1P4/1K6

#2

6 + 5

5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd6#
      • 2.Qe7#
  • Tries
    • 1.Bxa6?
      • 1...Ka3
        • 2.Bd6#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5
        • 2.Qb5#
        • 2.Qd6#
      • 1...b5!
    • 1.Bc3+?
      • 1...Kc5
        • 2.Qc6#
        • 2.Qd4#
        • 2.Qd5#
        • 2.Qe7#
        • 2.d4#
      • 1...Ka3!
    • 1.Qd6+?
      • 1...Ka5
        • 2.Qa3#
      • 1...Sc5!
    • 1.Qe7+?
      • 1...Ka5
        • 2.Qa3#
      • 1...Sc5!
  • Keys
    • 1.Qa7!
      • 1...Ka3
        • 2.Bd6#
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc5
        • 2.Qe7#
      • 1...Sc5
        • 2.Bc3#
      • 1...Sc7
        • 2.Bd6#
      • 1...Sb8
        • 2.Bd6#

Anticipated by 129850(1913)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);XS(d)
      • Vars
        • K(c);S_FLIGHT::B(E)
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • P(e);
    • Try
      • B(E);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR2(F)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR2(F)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • Q(F);
    • Vars
      • K(c);P_SPINS(d),S_FLIGHT::B(E)
      • K(c);P_SPINP(e),S_FLIGHT::QAB(F)
      • S(d);SBLOCK::B(E)
      • S(d);N_GUARD::B(E)
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