MESON Chess Problem Database

Problem Display
PID: 85838 (4R3/2pp1p2/1n2N2P/4k3/1PPN2PK/1P6/1PP1rpP1/2n5 w - - 0 1)

Speckmann, Werner

Europe Echecs, 1979

4R3/2pp1p2/1n2N2P/4k3/1PPN2PK/1P6/1PP1rpP1/2n5

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5+?
      • 1...Kxd4
        • 2.c3#
      • 1...Kf4
        • 2.g3#
      • 1...Kd6
        • 2.Sb7#
      • 1...Kf6!
    • 1.Sg5+?
      • 1...Kxd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sh3#
        • 2.g3#
      • 1...Kd6
        • 2.Sxf7#
      • 1...Kf6!
    • 1.Sxc7+?
      • 1...Kxd4
        • 2.Sb5#
      • 1...Kf4
        • 2.g3#
      • 1...Kd6
        • 2.Scb5#
      • 1...Kf6!
    • 1.Sg7+?
      • 1...Kxd4
        • 2.Sf5#
      • 1...Kf4
        • 2.Sh5#
        • 2.g3#
      • 1...Kd6
        • 2.Sgf5#
      • 1...Kf6!
  • Keys
    • 1.Sf4+!
      • 1...Kxd4
        • 2.c3#
      • 1...Kxf4
        • 2.g3#
      • 1...Kd6
        • 2.c5#
      • 1...Kf6
        • 2.g5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(G)::P(B)
        • K(d);S_FLIGHT::P(C)
        • K(d);S_FLIGHT::S(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(G)::S(J)
        • K(d);S_FLIGHT::S(J),XP(h)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(J);CHECK,XP(f)
      • Vars
        • K(d);S_FLIGHT,XS(G)::S(J)
        • K(d);S_FLIGHT::P(C)
        • K(d);S_FLIGHT::S(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(G)::S(J)
        • K(d);S_FLIGHT::S(J)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(J);CHECK
    • Vars
      • K(d);S_FLIGHT,XS(G)::P(B)
      • K(d);S_FLIGHT,XS(J)::P(C)
      • K(d);S_FLIGHT::P(F)
      • K(d);S_FLIGHT::P(H)
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