MESON Chess Problem Database

Problem Display
PID: 177430 (b3K3/P2RP2p/N1k3nR/pr2p3/PpN1p3/1P2P3/8/8 w - - 0 1)

Witte, Bernardus Stephanus

De Maasbode, 1954

b3K3/P2RP2p/N1k3nR/pr2p3/PpN1p3/1P2P3/8/8

#2

10 + 9

102 Probleemblad 1978

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Sb8#
    • 1...Rd5
      • 2.Rc7#
    • 1...Rb6
      • 2.Sxa5#
      • 2.Sxe5#
    • 1...Rb7
      • 2.Rd6#
    • 1...Rb8+
      • 2.axb8S#
    • 1...Bb7
      • 2.Rd6#
  • Tries
    • 1.Kd8?
      • 1...Rb8+
        • 2.axb8S#
      • 1...Rc5
        • 2.Sb8#
      • 1...Rb6
        • 2.Sxa5#
        • 2.Sxe5#
      • 1...Rb7
        • 2.Rd6#
      • 1...Bb7
        • 2.Rd6#
      • 1...Rd5!
  • Keys
    • 1.Kf7!
      • 1...Kxd7
        • 2.e8Q#
      • 1...Rc5
        • 2.Sb8#
      • 1...Rd5
        • 2.Rc7#
      • 1...Rb6
        • 2.Sxe5#
      • 1...Rb7
        • 2.Rd6#
      • 1...Rb8
        • 2.axb8S#
      • 1...Bb7
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,SBLOCK::S(E)
    • R(d);SBLOCK::R1(H)
    • R(d);CHECK,OGATE::PXR(d)=S
    • B(i);SBLOCK::R1(H)
  • Tries
    • Try
      • K(J);P-FLIGHT
      • Vars
        • R(d);CHECK,OGATE::PXR(d)=S
        • R(d);N_GUARD,SBLOCK::S(E)
        • R(d);SBLOCK::R1(H)
        • B(i);SBLOCK::R1(H)
      • Refutation
        • R(d);P_PINR(H)
  • Actual
    • K(J);S_FLIGHT
    • Vars
      • K(f);N_SPINS(g),S_FLIGHT,XR(H)::P=Q
      • R(d);N_GUARD,SBLOCK::S(E)
      • R(d);SBLOCK::R1(H)
      • R(d);N_GUARD,SBLOCK::S(D),XP(e)
      • R(d);OGATE::PXR(d)=S
      • B(i);SBLOCK::R1(H)
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