MESON Chess Problem Database

Problem Display
PID: 76783 (4N3/4Rp1Q/6P1/3k4/3P4/2K4b/8/8 w - - 0 1)

Butwillo, Brother

The Tablet, 1945

(First published on Sat Mar 3 1945)

4N3/4Rp1Q/6P1/3k4/3P4/2K4b/8/8

#2

6 + 3

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qh1#
    • 1...Bd7
      • 2.Qh1#
    • 1...Bc8
      • 2.Qh1#
  • Tries
    • 1.Qxh3?
      • threat
        • 2.Qg2#
        • 2.Qd7#
        • 2.Qh1#
        • 2.Qf3#
      • 1...f5
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...Kc6!
    • 1.Qh5+?
      • 1...Kc6
        • 2.Qc5#
      • 1...f5
        • 2.Qf3#
      • 1...Bf5!
    • 1.Qxf7+?
      • 1...Be6
        • 2.Qxe6#
        • 2.Qf3#
      • 1...Kc6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.Qxf7#
      • 1...Bxe6
        • 2.Qh1#
      • 1...fxe6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATE::QAB(E)
  • Tries
    • Try
      • Q(E);XB(a)
      • Threat
        • DUALS(4)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
        • P(c);P_SPINP(c)::QAB(E)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(E);CHECK,XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • S(F)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(D)::QAB1(E),XP(c)
      • B(a);OGATE,SBLOCK,XR(D)::QAB(E)
      • P(c);OGATE,SBLOCK,XR(D)::QAB(E)
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