MESON Chess Problem Database

Problem Display
PID: 61109 (8/4p1p1/n1p3P1/bpPk1P2/2R3NR/6N1/2Pp4/3K1BB1 w - - 0 1)

Heinonen, Unto

1st Prize, Heinonen (E)-50 JT, 1972

8/4p1p1/n1p3P1/bpPk1P2/2R3NR/6N1/2Pp4/3K1BB1

#2

11 + 8

102 Probleemblad 1974
3753 FIDE Album (1971-1973) 1978

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5
      • 2.Rd4#
    • 1...bxc4
      • 2.Bg2#
    • 1...e5
      • 2.Se3#
  • Tries
    • 1.Se4?
      • threat
        • 2.Rd4#
      • 1...Bc3
        • 2.Sxc3#
      • 1...e5
        • 2.Se3#
      • 1...bxc4!
    • 1.Sh5?
      • threat
        • 2.Sf4#
      • 1...Sxc5
        • 2.Rd4#
      • 1...bxc4
        • 2.Bg2#
      • 1...e5
        • 2.Se3#
      • 1...Bc7!
    • 1.Rf4?
      • threat
        • 2.Bg2#
      • 1...Sxc5
        • 2.Rd4#
      • 1...e5!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sf4#
      • 1...Kxc4
        • 2.Sf6#
      • 1...Sxc5
        • 2.Rd4#
      • 1...bxc4
        • 2.Bg2#
      • 1...Bc7
        • 2.Sc3#
      • 1...e5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK,XP(I)::R1(F)
    • P(c);SBLOCK,XR(F)::B(B)
    • P(g);SBLOCK::S(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(F)
      • Vars
        • B(b);N_GUARD::S(E),XB(b)
        • P(g);SBLOCK::S(G)
      • Refutation
        • P(c);XR(F)
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • S(e);SBLOCK,XP(I)::R1(F)
        • P(c);SBLOCK,XR(F)::B(B)
        • P(g);SBLOCK::S(G)
      • Refutation
        • B(b);
    • Try
      • R(F);
      • Threat
        • B(B)
      • Vars
        • S(e);SBLOCK,XP(I)::R1(F)
      • Refutation
        • P(g);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT,XR(F)::R(H)+S(G)
      • S(e);SBLOCK,XP(I)::R1(F)
      • P(c);SBLOCK,XR(F)::B(B)
      • B(b);N_GUARD::S(E)
      • P(g);SBLOCK::S(G)
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