MESON Chess Problem Database

Problem Display
PID: 287517 (R3N3/RPPkPP1Q/8/2P3K1/4P3/8/8/8 w - - 0 1)

Subotic, Miroslav

Mat, 1987

R3N3/RPPkPP1Q/8/2P3K1/4P3/8/8/8

#2

11 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Sf6+?
      • 1...Ke6
        • 2.e8Q#
        • 2.e8R#
      • 1...Kxc7
        • 2.Rc8#
      • 1...Kxe7
        • 2.Re8#
        • 2.f8S#
      • 1...Kc6!
    • 1.Qf5+?
      • 1...Kxe7
        • 2.f8Q#
        • 2.f8B#
      • 1...Kc6!
    • 1.Qg7?
      • 1...Ke6
        • 2.f8S#
      • 1...Kxe7
        • 2.f8S#
      • 1...Kc6!
    • 1.b8Q?
      • threat
        • 2.c8Q#
      • 1...Kc6
        • 2.c8Q#
        • 2.c8R#
      • 1...Ke6
        • 2.c8Q#
        • 2.c8B#
      • 1...Kxe7!
    • 1.c8S?
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc6!
    • 1.f8Q?
      • threat
        • 2.c8Q#
      • 1...Ke6
        • 2.Qhf5#
        • 2.Qff5#
      • 1...Kc6!
    • 1.f8B?
      • threat
        • 2.c8Q#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc6!
  • Keys
    • 1.Sd6!
      • 1...Kc6
        • 2.c8Q#
      • 1...Ke6
        • 2.e8Q#
      • 1...Kxc7
        • 2.b8S#
      • 1...Kxe7
        • 2.f8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(K);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::P=Q
        • K(a);N_GUARD,P-FLIGHT,XP(F)::R1(J)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XP(G)::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::P=S
        • K(a);N_GUARD,P-FLIGHT,XP(G)::P=S
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • P=Q
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • P(F);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(H);
      • Threat
        • P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(H);
      • Threat
        • P=Q
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(I)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(K);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::P=Q
      • K(a);N_GUARD,P-FLIGHT,XP(F)::P=S
      • K(a);N_GUARD,P-FLIGHT,XP(G)::P=S
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