MESON Chess Problem Database

Problem Display
PID: 243895 (K1B2R2/2PrP3/4NnpN/3RpP2/4knp1/1Ppp4/3b1Q2/8 w - - 0 1)

Fleck, Ferenc

Shakhmaty v SSSR, 1947

K1B2R2/2PrP3/4NnpN/3RpP2/4knp1/1Ppp4/3b1Q2/8

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Sg5#
    • 1...S4xd5
      • 2.Sc5#
    • 1...S6xd5
      • 2.Sc5#
      • 2.Sg5#
  • Tries
    • 1.Bb7?
      • threat
        • 2.Sc5#
        • 2.Sg5#
        • 2.Rd4#
      • 1...Rxd5
        • 2.Sc5#
        • 2.Sg5#
      • 1...Rxc7
        • 2.Sg5#
        • 2.Rd4#
      • 1...S4xd5
        • 2.Sc5#
      • 1...Sxe6
        • 2.Rd4#
      • 1...S6xd5
        • 2.Sc5#
        • 2.Sg5#
      • 1...Be3
        • 2.Sg5#
        • 2.Rd4#
      • 1...Se2
        • 2.Sc5#
        • 2.Rd4#
      • 1...Sg2
        • 2.Sc5#
        • 2.Rd4#
      • 1...Sh3
        • 2.Sc5#
        • 2.Rd4#
      • 1...S4h5
        • 2.Sc5#
        • 2.Rd4#
      • 1...Sh7
        • 2.Sc5#
        • 2.Rd4#
      • 1...g5
        • 2.Sc5#
        • 2.Sxg5#
        • 2.Rd4#
      • 1...Rd8+!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Rxe5#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5
        • 2.Rxe5#
      • 1...Rxd5
        • 2.Seg5#
      • 1...S4xd5
        • 2.Sc5#
      • 1...S6xd5
        • 2.Sfg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(j);SBLOCK,XR(C)::S(E)
    • S(e);SBLOCK,XR(C)::S(E)
  • Tries
    • Try
      • B(J);
      • Threat
        • DUALS(3)
      • Vars
        • S(e);P_SPINS(e),XR(C)::S(E)
        • S(e);XS(E)::B(J)+R(C),DCHECK
      • Refutation
        • R(j);CHECK
  • Actual
    • S(F);
    • Threat
      • R1(C),XP(g)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(C)::B(J)
      • K(d);P_SPINP(g),P_SPINS(e),S_FLIGHT,XP(D)::R1(C),XP(g)
      • R(j);SBLOCK,XR(C)::S(E)
      • S(e);SBLOCK,XR(C)::S(E)
      • S(h);SBLOCK,XR(C)::S(F)
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