MESON Chess Problem Database

Problem Display
PID: 225746 (8/7Q/1n2p3/4Np2/4PP2/3PkP2/1Bb1P2P/4K3 w - - 0 1)

Salai (Snr), Ladislav

Praca, 1954

8/7Q/1n2p3/4Np2/4PP2/3PkP2/1Bb1P2P/4K3

#2

10 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qh6#
    • 1...fxe4
      • 2.Qxe4#
  • Tries
    • 1.Sc4+?
      • 1...Kxf4
        • 2.Bc1#
        • 2.Qh4#
        • 2.Qh6#
      • 1...Sxc4!
    • 1.Sg4+?
      • 1...Kxf4
        • 2.Bc1#
        • 2.Qh6#
      • 1...fxg4!
    • 1.Sc6?
      • threat
        • 2.Bc1#
      • 1...Kxf4
        • 2.Bc1#
        • 2.Qh6#
      • 1...Sc4!
    • 1.Bd4+?
      • 1...Kxf4
        • 2.Qh4#
        • 2.Qh6#
      • 1...Kxd4!
  • Keys
    • 1.Qc7!
      • 1...Kxf4
        • 2.Bc1#
      • 1...Bxd3
        • 2.Qc1#
      • 1...fxe4
        • 2.Sg4#
      • 1...Bb1
        • 2.Qc1#
      • 1...Bd1
        • 2.Qc1#
      • 1...Bb3
        • 2.Qc1#
      • 1...Ba4
        • 2.Qc1#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sd5
        • 2.Sc4#
      • 1...Sd7
        • 2.Sc4#
      • 1...Sa8
        • 2.Sc4#
      • 1...Sc8
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XP(H)::QAB(J)
    • P(c);OGATE,XP(G)::QAR1(J),XP(c)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • S(d);XS(I)
    • Try
      • S(I);CHECK
      • Refutation
        • P(c);XS(I)
    • Try
      • S(I);
      • Threat
        • B(B)
      • Refutation
        • S(d);
    • Try
      • B(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XB(B)
  • Actual
    • Q(J);
    • Vars
      • K(b);S_FLIGHT,XP(H)::B(B)
      • B(a);OGATE,XP(E)::QAB(J)
      • P(c);N_GUARD,XP(G)::S(I)
      • B(a);OGATE::QAB(J)
      • S(d);N_GUARD::S(I)
      • S(d);N_GUARD::S(I),XS(d)
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