MESON Chess Problem Database

Problem Display
PID: 76795 (8/1R6/3P4/2p5/kp6/1p1R4/p7/Q2K4 w - - 0 1)

Butwillo, Brother

The Tablet, 1945

(First published on Sat Jul 14 1945)

8/1R6/3P4/2p5/kp6/1p1R4/p7/Q2K4

#2

5 + 5

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Ra7#
    • 1...b2
      • 2.Qxa2#
  • Tries
    • 1.Rxb3?
      • threat
        • 2.Qxa2#
      • 1...Ka5
        • 2.Qxa2#
      • 1...Kxb3!
    • 1.Rd5?
      • 1...Ka3
        • 2.Ra7#
      • 1...b2
        • 2.Qxa2#
      • 1...c4
        • 2.Ra7#
      • 1...Ka5!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qa8#
      • 1...a1Q+
        • 2.Qxa1#
      • 1...a1R+
        • 2.Qxa1#
      • 1...Ka3
        • 2.Ra7#
      • 1...Ka5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::R(E)
    • P(b);N_GUARD::QAR2(A),XP(a)
  • Tries
    • Try
      • R(C);XP(b)
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • K(c);P-FLIGHT::QAR(A),XP(a)
      • Refutation
        • K(c);N_SPINP(a),P_SPINP(d),S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::R(E)
        • P(b);N_GUARD::QAR2(A),XP(a)
        • P(e);::R(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAR(A)
    • Vars
      • P(a);CHECK,OGATEB::QAR(A),XQ(a)
      • P(a);CHECK,OGATEB::QAR(A),XR(a)
      • K(c);P-FLIGHT,P_SPINP(b)::R(E)
      • K(c);P-FLIGHT::QAR(A)
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