MESON Chess Problem Database

Problem Display
PID: 9576 (4B3/b1R4Q/1B6/8/1kp2K2/rNp5/8/8 w - - 0 1)

Blake, Percy Francis

4th HM., Western Daily Mercury, 1905

4B3/b1R4Q/1B6/8/1kp2K2/rNp5/8/8

#2

6 + 5

17453 Liverpool and Merseyside Illustrated 1912

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb3
      • 2.Qb1#
    • 1...Rxb3
      • 2.Qe7#
    • 1...cxb3
      • 2.Qe4#
      • 2.Qe7#
  • Tries
    • 1.Ba5+?
      • 1...Kxb3
        • 2.Qb1#
      • 1...Rxa5!
    • 1.Bc5+?
      • 1...Kxb3
        • 2.Qb1#
      • 1...Bxc5!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Ba5#
        • 2.Bc5#
        • 2.Bxa7#
      • 1...Bb8+
        • 2.Bc7#
      • 1...Kxb3
        • 2.Qb1#
      • 1...Rxb3
        • 2.Qe7#
      • 1...Bxb6
        • 2.Rxb6#
      • 1...cxb3
        • 2.Qe4#
      • 1...Ra1
        • 2.Bc5#
      • 1...Ra2
        • 2.Bc5#
      • 1...Ra4
        • 2.Bc5#
      • 1...Ra5
        • 2.Bc5#
      • 1...Ra6
        • 2.Bc5#
      • 1...c2
        • 2.Ba5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P-FLIGHT,XS(A)::QAR2(E)
    • R(a);SBLOCK,XS(A)::QAB(E)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(A)::QAR2(E)
      • Refutation
        • R(a);XB(C)
    • Try
      • B(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(A)::QAR2(E)
      • Refutation
        • B(e);XB(C)
  • Actual
    • R(D);
    • Threat
      • DUALS(3)
    • Vars
      • B(e);CHECK,N_GUARD::R(D)+B(C)
      • K(c);OGATEB,P-FLIGHT,XS(A)::QAR2(E)
      • R(a);SBLOCK,XS(A)::QAB(E)
      • B(e);OGATE,P_SPINB(e),XB(C)::R(D),XB(e)
      • P(d);OGATEB,SBLOCK,XS(A)::QAR(E)
      • R(a);::R(D)+B(C),DCHECK
      • P(b);::R(D)+B(C),DCHECK
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