MESON Chess Problem Database

Problem Display
PID: 270739 (7n/4N2R/5kP1/3P4/2N3K1/8/8/8 w - - 0 1)

Bajtay, Jozsef

Probleemblad, 1951

7n/4N2R/5kP1/3P4/2N3K1/8/8/8

#2

6 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sxg6
      • 2.Sg8#
    • 1...Sf7
      • 2.Rxf7#
  • Tries
    • 1.Kf4?
      • 1...Sf7
        • 2.Rxf7#
      • 1...Sxg6+!
    • 1.Kh4?
      • 1...Sf7
        • 2.Rxf7#
      • 1...Sxg6+!
    • 1.Kh5?
      • 1...Sf7
        • 2.Rxf7#
      • 1...Sxg6!
  • Keys
    • 1.g7!
      • threat
        • 2.gxh8Q#
        • 2.gxh8B#
        • 2.g8S#
      • 1...Kxe7
        • 2.gxh8Q#
      • 1...Kf7
        • 2.gxh8Q#
      • 1...Sg6
        • 2.g8S#
      • 1...Sf7
        • 2.g8S#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK,XP(D)::S(E)
    • S(b);N_GUARD::R1(F),XS(b)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(b);N_GUARD::R1(F),XS(b)
      • Refutation
        • S(b);CHECK,XP(D)
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(b);N_GUARD::R1(F),XS(b)
      • Refutation
        • S(b);CHECK,XP(D)
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(b);N_GUARD::R1(F),XS(b)
      • Refutation
        • S(b);XP(D)
  • Actual
    • P(D);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);S_FLIGHT,XS(E)::PXS(b)=Q
      • K(a);P-FLIGHT::PXS(b)=Q
      • S(b);::P=S
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