MESON Chess Problem Database

Problem Display
PID: 61110 (3n4/1R4r1/2p1pP2/2PkP3/N2N2P1/1npB4/4RB2/b3K3 w - - 0 1)

Labai, Zoltan

1st Prize, Pravda (Bratislava), 1971-1972

3n4/1R4r1/2p1pP2/2PkP3/N2N2P1/1npB4/4RB2/b3K3

#2

11 + 8

3753 FIDE Album (1971-1973) 1978

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.Rd7#
    • 1...Rg5
      • 2.Rd7#
    • 1...Rg6
      • 2.Rd7#
    • 1...Rd7
      • 2.Rxd7#
    • 1...Rg8
      • 2.Rd7#
    • 1...Sxc5
      • 2.Sb6#
  • Tries
    • 1.Sxc3+?
      • 1...Kxc5
        • 2.Sxb3#
        • 2.Sxe6#
      • 1...Bxc3+!
    • 1.Sc2?
      • threat
        • 2.Sb4#
        • 2.Sb6#
      • 1...Rxg4
        • 2.Sb6#
        • 2.Rd7#
      • 1...Sd4
        • 2.Sb4#
      • 1...Rxb7!
    • 1.Sxc6?
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Be4#
      • 1...Rxg4
        • 2.Se7#
      • 1...Sxc6
        • 2.Sb6#
      • 1...Rxb7!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Sf4#
      • 1...Kxe6
        • 2.Bc4#
      • 1...Rxg4
        • 2.Sc7#
      • 1...Sxe6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(g);N_GUARD,XP(G)::R(K)
    • R(g);N_GUARD::R(K)
    • R(g);N_GUARD::R(K),XR(g)
    • S(b);SBLOCK,XP(H)::S(E)
  • Tries
    • Try
      • S(E);CHECK,XP(c)
      • Refutation
        • B(a);CHECK,XS(E)
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::S(F)
      • Refutation
        • R(g);XR(K)
    • Try
      • S(F);XP(e)
      • Threat
        • S(F)
      • Vars
        • K(d);S_FLIGHT,XS(F)::B(D)
        • R(g);N_GUARD,XP(G)::S(F)
        • S(h);SBLOCK,XS(F)::S(E)
      • Refutation
        • R(g);XR(K)
  • Actual
    • S(F);XP(f)
    • Threat
      • S(F)
    • Vars
      • K(d);S_FLIGHT,XS(F)::B(D)
      • R(g);N_GUARD,XP(G)::S(F)
      • S(h);SBLOCK,XS(F)::S(E)
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