MESON Chess Problem Database

Problem Display
PID: 76788 (8/1n6/Rp6/8/1k1K4/1P6/8/3Q4 w - - 0 1)

Butwillo, Brother

The Tablet, 1945

(First published on Sat Mar 31 1945)

8/1n6/Rp6/8/1k1K4/1P6/8/3Q4

#2

4 + 3

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Rxb6+?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ka5!
    • 1.Qc1?
      • threat
        • 2.Qc4#
      • 1...Kxb3
        • 2.Qb1#
        • 2.Qc3#
      • 1...Kb5
        • 2.Qc4#
      • 1...Sa5
        • 2.Rxb6#
      • 1...b5
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sd6!
    • 1.Qe1+?
      • 1...Kxb3
        • 2.Qc3#
        • 2.Qb1#
      • 1...Kb5!
    • 1.Qd2+?
      • 1...Kxb3
        • 2.Qc3#
      • 1...Kb5!
    • 1.Qd3?
      • threat
        • 2.Ra4#
        • 2.Qc4#
      • 1...Sd6
        • 2.Ra4#
      • 1...Sc5
        • 2.Qc4#
      • 1...b5
        • 2.Qc3#
      • 1...Sa5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Rxb6#
        • 2.Qa4#
      • 1...Kxb3
        • 2.Qc3#
        • 2.Qb1#
      • 1...Kb5
        • 2.Qa4#
      • 1...Sc5
        • 2.Rxb6#
      • 1...Sd6
        • 2.Qa4#
      • 1...b5
        • 2.Qc3#
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • S(c);SBLOCK::R(D),XP(b)
      • Refutation
        • S(c);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::R1(D)
        • S(c);::QAR1(A)
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • S(c);::R(D),XP(b)
      • S(c);::QAR1(A)
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