MESON Chess Problem Database

Problem Display
PID: 115411 (R3RN2/4r3/1P1B4/1P1kpp2/QK2NP1p/1pP1P2q/2b1PP2/n1r5 w - - 0 1)

Burda, Josef

Canadian Chess Chat, 1982

R3RN2/4r3/1P1B4/1P1kpp2/QK2NP1p/1pP1P2q/2b1PP2/n1r5

#2

14 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Kc5#
    • 1...Ra7
      • 2.Rxe5#
    • 1...Rb7
      • 2.Rxe5#
    • 1...Rc7
      • 2.Rxe5#
    • 1...Rd7
      • 2.Rxe5#
    • 1...Rf7
      • 2.Rxe5#
    • 1...Rg7
      • 2.Rxe5#
    • 1...Rh7
      • 2.Rxe5#
  • Tries
    • 1.Bxe7?
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Kc5#
      • 1...Bxe4
        • 2.Rad8#
        • 2.Red8#
      • 1...fxe4
        • 2.c4#
      • 1...exf4!
  • Keys
    • 1.Rad8!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Kc5#
      • 1...Bxe4
        • 2.Bxe7#
      • 1...fxe4
        • 2.c4#
      • 1...Re6
        • 2.Qa8#
      • 1...Rd7
        • 2.Rxe5#
      • 1...Rf7
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(g);S_FLIGHT,XS(G)::QAR(E)+K(F)
    • R(j);OGATE::R1(M),XP(h)
  • Tries
    • Try
      • B(K);XR(j)
      • Threat
        • S(G)
      • Vars
        • K(g);S_FLIGHT,XS(G)::QAR(E)+K(F)
        • P(i);SBLOCK,XS(G)::P(C)
      • Refutation
        • P(h);XP(H)
  • Actual
    • R(L);
    • Threat
      • S(G)
    • Vars
      • K(g);S_FLIGHT,XS(G)::QAR(E)+K(F)
      • B(c);SBLOCK,XS(G)::R(L)+B(K),XR(j)
      • P(i);SBLOCK,XS(G)::P(C)
      • R(j);N_GUARD::QAB(E)
      • R(j);OGATE::R1(M),XP(h)
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