MESON Chess Problem Database

Problem Display
PID: 76697 (2K5/8/1pkp4/P1p5/8/1Q6/3P4/8 w - - 0 1)

Butwillo, Brother

The Tablet, 1944

(First published on Sat Jul 1 1944)

2K5/8/1pkp4/P1p5/8/1Q6/3P4/8

#2

4 + 4

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qxc4#
    • 1...bxa5
      • 2.Qb7#
    • 1...d5
      • 2.Qxb6#
  • Tries
    • 1.Qf7?
      • 1...bxa5
        • 2.Qb7#
      • 1...c4
        • 2.Qxc4#
      • 1...d5
        • 2.Qd7#
      • 1...b5
        • 2.Qb7#
      • 1...Kb5!
    • 1.d3?
      • 1...bxa5
        • 2.Qb7#
      • 1...c4
        • 2.Qxc4#
      • 1...d5
        • 2.Qxb6#
      • 1...b5!
  • Keys
    • 1.d4!
      • threat
        • 2.d5#
      • 1...cxd4
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...d5
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAR2(B),XP(a)
    • P(b);OGATE,XP(C)::QAB1(B)
    • P(d);SBLOCK::QAR1(B),XP(b)
  • Tries
    • Try
      • Q(B);
      • Vars
        • P(b);XP(C)::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(d);::QAB1(B)
        • P(b);::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(A);
      • Vars
        • P(b);OGATE,XP(C)::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(d);SBLOCK::QAR1(B),XP(b)
      • Refutation
        • P(b);
  • Actual
    • P(A);
    • Threat
      • P(A)
    • Vars
      • P(a);OGATEB,XP(A)::QAR2(B)
      • P(a);OGATEB::QAR2(B),XP(a)
      • P(d);SBLOCK::QAR1(B),XP(b)
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