MESON Chess Problem Database

Problem Display
PID: 39186 (6B1/8/8/8/K7/8/1pR5/1kbQ4 w - - 0 1)

Kujoth, Richard

Milwaukee Journal, 1946

6B1/8/8/8/K7/8/1pR5/1kbQ4

#2

4 + 3

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Rxb2+?
      • 1...Ka1
        • 2.Qxc1#
      • 1...Kxb2!
    • 1.Rc4?
      • 1...Ka2
        • 2.Rxc1#
      • 1...Ka1!
    • 1.Qe1?
      • 1...Kxc2
        • 2.Bh7#
      • 1...Ka1!
  • Keys
    • 1.Qd4!
      • 1...Ka1
        • 2.Rxc1#
      • 1...Kxc2
        • 2.Bh7#
      • 1...Bd2
        • 2.Qxb2#
      • 1...Be3
        • 2.Qxb2#
      • 1...Bf4
        • 2.Qxb2#
      • 1...Bg5
        • 2.Qxb2#
      • 1...Bh6
        • 2.Qxb2#

Anticipated by 76621(1939)

This anticipates 23725(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK,XP(c)
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT,XR(B)
    • Try
      • R(B);
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::B(D)+R(B),XB(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_SPINB(b),OGATEB,S_FLIGHT,XR(B)::B(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);N_PINB(b)
    • Vars
      • K(a);P-FLIGHT,P_SPINP(c)::R(B),XB(b)
      • K(a);OGATEB,S_FLIGHT,XR(B)::B(D)
      • B(b);N_GUARD::QAR1(A),XP(c)
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