MESON Chess Problem Database

Problem Display
PID: 81342 (B1K5/pN6/R2p1P2/2Pk4/P1Rp2P1/P2p2N1/3P3B/8 w - - 0 1)

Hanning, John R

The Field, 1951

(First published on Sat Sep 1 1951)

B1K5/pN6/R2p1P2/2Pk4/P1Rp2P1/P2p2N1/3P3B/8

#2

13 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...dxc5
      • 2.Rxc5#
  • Tries
    • 1.Sh5?
      • 1...Ke4
        • 2.Sxd6#
      • 1...Ke6
        • 2.Sd8#
      • 1...dxc5
        • 2.Sa5#
      • 1...Kxc4!
    • 1.Sd8+?
      • 1...Ke5
        • 2.Se4#
        • 2.Sh5#
      • 1...Kxc4!
  • Keys
    • 1.Se4!
      • 1...Kxc4
        • 2.Sa5#
      • 1...Kxe4
        • 2.Sxd6#
      • 1...Ke6
        • 2.Sd8#
      • 1...dxc5
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATE,XP(H)::R1(F),XP(d)
  • Tries
    • Try
      • S(D);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::B(L)+S(K),DCHECK,XP(d)
        • K(c);P_SPINP(d),S_FLIGHT::S(K)
        • P(d);XP(H)::B(L)+S(K)
      • Refutation
        • K(c);S_FLIGHT,XR(F)
    • Try
      • S(K);CHECK
      • Refutation
        • K(c);S_FLIGHT,XR(F)
  • Actual
    • S(D);
    • Vars
      • K(c);S_FLIGHT,XR(F)::S(K)
      • K(c);P_SPINP(b),S_FLIGHT,XS(D)::B(L)+S(K),DCHECK,XP(d)
      • K(c);P_SPINP(d),S_FLIGHT::S(K)
      • P(d);XP(H)::B(L)+S(K)
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