MESON Chess Problem Database

Problem Display
PID: 255886 (3Q4/8/8/pp2r3/k7/B7/K2b4/8 w - - 0 1)

Walcher, B

Wiener Schachzeitung, 1934

3Q4/8/8/pp2r3/k7/B7/K2b4/8

#2

3 + 5

15601 Albrecht-Leiss-Degener Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qd1#
    • 1...Be1
      • 2.Qd1#
    • 1...Bc3
      • 2.Qd1#
    • 1...Be3
      • 2.Qd1#
    • 1...Bb4
      • 2.Qd1#
    • 1...Bf4
      • 2.Qd1#
    • 1...Bg5
      • 2.Qd1#
    • 1...Bh6
      • 2.Qd1#
  • Tries
    • 1.Qd4+?
      • 1...Bb4
        • 2.Qd1#
      • 1...b4!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Qxa5#
      • 1...Kxb4
        • 2.Qd4#
      • 1...Bxb4
        • 2.Qd1#
      • 1...axb4
        • 2.Qa8#

This anticipates 110581(1975)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • B(a);OGATE::QAB(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);OGATE,P_SPINB(a)::QAB(C)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • B(B);
    • Threat
      • QAR1(C),XP(c)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XB(B)::QAR2(C)
      • B(a);OGATE,SBLOCK,XB(B)::QAB(C)
      • P(c);OGATEB,SBLOCK,XB(B)::QAR(C)
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