MESON Chess Problem Database

Problem Display
PID: 64280 (1nrk1b2/1B2R1p1/2pP2P1/2p2P2/2K5/3QB3/8/8 w - - 0 1)

Lider, Valentin Viktorovich

Probleemblad, 1982

1nrk1b2/1B2R1p1/2pP2P1/2p2P2/2K5/3QB3/8/8

#2

8 + 7

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4?
      • 1...Bxe7
        • 2.Qxe7#
      • 1...Rc7
        • 2.dxc7#
      • 1...Sd7
        • 2.Re8#
      • 1...Sa6!
  • Keys
    • 1.d7!
      • 1...Kc7
        • 2.d8Q#
        • 2.d8B#
      • 1...Kxe7
        • 2.Bg5#
      • 1...Bxe7
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Sxd7
        • 2.Qxd7#
      • 1...Rc7
        • 2.Re8#
      • 1...Sa6
        • 2.dxc8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • B(g);OGATE,XR(H)::QAB1(A),XB(g)
        • R(e);OGATE::P(E),XR(e)
        • S(d);SBLOCK::R1(H)
      • Refutation
        • S(d);
  • Actual
    • P(E);
    • Vars
      • K(f);OGATE,S_FLIGHT::P=Q
      • K(f);OGATEB,S_FLIGHT,XR(H)::B(B)
      • B(g);SBLOCK,XR(H)::PXR(e)=Q
      • S(d);OGATE,P_SPINS(d),XP(E)::QAR1(A),XS(d)
      • R(e);SBLOCK::R1(H)
      • S(d);::PXR(e)=S
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