MESON Chess Problem Database

Problem Display
PID: 237816 (1B2b3/N1rpn2R/p1Pkr1pN/p2p2K1/P2Q1P2/7B/8/8 w - - 0 1)

Pituk, Alexander

Arbejder-Skak, 1951

1B2b3/N1rpn2R/p1Pkr1pN/p2p2K1/P2Q1P2/7B/8/8

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re5+
      • 2.fxe5#
    • 1...Bf7
      • 2.Sxf7#
    • 1...Sxc6
      • 2.Sc8#
  • Tries
    • 1.Sc8+?
      • 1...Kxc6
        • 2.Qb6#
      • 1...Sxc8!
  • Keys
    • 1.cxd7!
      • 1...Re5+
        • 2.fxe5#
      • 1...Kxd7
        • 2.Qxd5#
      • 1...Bxd7
        • 2.Sf7#
      • 1...Re1
        • 2.dxe8S#
      • 1...Re2
        • 2.dxe8S#
      • 1...Re3
        • 2.dxe8S#
      • 1...Re4
        • 2.dxe8S#
      • 1...Rf6
        • 2.dxe8S#
      • 1...Bf7
        • 2.d8Q#
        • 2.d8R#
      • 1...Sf5
        • 2.Qb6#
      • 1...Sc6
        • 2.Sc8#
      • 1...Sc8
        • 2.dxc8S#
      • 1...Sg8
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • R(e);CHECK,OGATE::P(D),XR(e)
    • B(j);N_GUARD::S(G),XB(j)
    • S(i);N_GUARD,SBLOCK,XP(F)::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_SPINP(b),N_SPINR(g),P-FLIGHT,XP(F)::QAR1(C)
      • Refutation
        • S(i);XS(H)
  • Actual
    • P(F);XP(h)
    • Vars
      • R(e);CHECK,OGATE::P(D),XR(e)
      • K(d);N_SPINR(g),P-FLIGHT,P_SPINR(e),P_SPINS(i),XP(F)::QAR2(C),XP(b)
      • B(j);N_GUARD,SBLOCK,XP(F)::S(G)
      • R(e);::PXB(j)=S
      • B(j);N_GUARD::P=Q
      • S(i);N_GUARD::QAR2(C)
      • S(i);N_GUARD,SBLOCK::S(H)
      • S(i);OGATE::PXS(i)=S
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Developed and maintained by Brian Stephenson.
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