MESON Chess Problem Database

Problem Display
PID: 224469 (8/8/6B1/p1NN4/p7/8/pk1BK1Q1/8 w - - 0 1)

Wurzburg, Otto

Detroit Free Press, 1890

(First published on Sun Nov 23 1890)

8/8/6B1/p1NN4/p7/8/pk1BK1Q1/8

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka1
      • 2.Bc3#
    • 1...Ka3
      • 2.Bc1#
  • Tries
    • 1.Bc3+?
      • 1...Kc1
        • 2.Qf1#
        • 2.Qh1#
        • 2.Qg1#
        • 2.Qg5#
      • 1...Ka3!
  • Keys
    • 1.Kd1!
      • 1...a1Q+
        • 2.Bc1#
      • 1...a1R+
        • 2.Bc1#
      • 1...Ka1
        • 2.Bc3#
      • 1...Ka3
        • 2.Bc1#
      • 1...a1S
        • 2.Bc1#
      • 1...a1B
        • 2.Bc1#
        • 2.Bb4#
      • 1...a3
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • P(a);CHECK,SBLOCK::QAR(C)+B(A),DCHECK
      • K(b);S_FLIGHT::B(A)
      • P(a);SBLOCK::QAR(C)+B(A),DCHECK
      • P(c);SBLOCK::QAR(C)+B(A),DCHECK
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