MESON Chess Problem Database

Problem Display
PID: 245156 (4Q3/5P2/2K2RN1/4Rq1p/4N1kP/5p2/5P1B/5B2 w - - 0 1)

Maleika, Gerhard

Scacchi e Scienze Applicate, 2010

4Q3/5P2/2K2RN1/4Rq1p/4N1kP/5p2/5P1B/5B2

#2

11 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Rxe4#
    • 1...Qe6+
      • 2.Qxe6#
    • 1...Qd7+
      • 2.Qxd7#
    • 1...Qc8+
      • 2.Qxc8#
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qg5
      • 2.Rxg5#
    • 1...Qxf6+
      • 2.Sxf6#
  • Tries
    • 1.Kb5?
      • 1...Qd7+
        • 2.Qxd7#
      • 1...Qxe4
        • 2.Rxe4#
        • 2.Rg5#
      • 1...Qxg6
        • 2.Rf4#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qe6
        • 2.Rg5#
        • 2.Rf4#
        • 2.Qxe6#
      • 1...Qc8
        • 2.Rg5#
        • 2.Rf4#
        • 2.Qxc8#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qxe5+!
    • 1.Kc5?
      • 1...Qc8+
        • 2.Qxc8#
      • 1...Qxe4
        • 2.Rxe4#
        • 2.Rg5#
      • 1...Qxg6
        • 2.Rf4#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qe6
        • 2.Rg5#
        • 2.Rf4#
        • 2.Qxe6#
      • 1...Qd7
        • 2.Rg5#
        • 2.Rf4#
        • 2.Qxd7#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qxe5+!
    • 1.Kd5?
      • 1...Qxe4+
        • 2.Rxe4#
      • 1...Qe6+
        • 2.Qxe6#
      • 1...Qd7+
        • 2.Qxd7#
      • 1...Qxg6
        • 2.Rf4#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qc8
        • 2.Rg5#
        • 2.Rf4#
        • 2.Qxc8#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qxe5+!
    • 1.Kb7?
      • 1...Qxe4+
        • 2.Rxe4#
      • 1...Qd7+
        • 2.Qxd7#
      • 1...Qc8+
        • 2.Qxc8#
      • 1...Qxg6
        • 2.Rf4#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qe6
        • 2.Rg5#
        • 2.Rf4#
        • 2.Qxe6#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qxe5!
    • 1.Kc7?
      • 1...Qd7+
        • 2.Qxd7#
      • 1...Qc8+
        • 2.Qxc8#
      • 1...Qxe4
        • 2.Rxe4#
        • 2.Rg5#
      • 1...Qxg6
        • 2.Rf4#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Qe6
        • 2.Rg5#
        • 2.Rf4#
        • 2.Qxe6#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qxe5+!
    • 1.Qd7?
      • threat
        • 2.Qxf5#
      • 1...Qe6+
        • 2.Qxe6#
      • 1...Qxd7+!
    • 1.Qc8?
      • threat
        • 2.Qxf5#
      • 1...Qe6+
        • 2.Qxe6#
      • 1...Qd7+
        • 2.Qxd7#
      • 1...Qxc8+!
  • Keys
    • 1.Bg3!
      • 1...Qxe4+
        • 2.Rxe4#
      • 1...Qe6+
        • 2.Qxe6#
      • 1...Qd7+
        • 2.Qxd7#
      • 1...Qc8+
        • 2.Qxc8#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Qxg6
        • 2.Rxg6#
      • 1...Qxe5
        • 2.Sxe5#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qg5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,OGATE,XS(D)::R(F),XQ(c)
    • Q(c);CHECK,OGATEB::QAB(K),XQ(c)
    • Q(c);OGATE::R1(H),XQ(c)
    • Q(c);OGATE::R1(F),XQ(c)
    • Q(c);CHECK,XR(H)::S(D),XQ(c)
  • Tries
    • Try
      • K(G);P_SPINR(F),S_FLIGHT
      • Vars
        • Q(c);CHECK,N_PINR(F),OGATEB::QAB(K),XQ(c)
        • Q(c);N_PINR(F),OGATE,XS(I)::R1(H)
        • Q(c);N_PINR(F),XR(H)::S(D),XQ(c)
        • Q(c);N_PINR(F),OGATE::R1(H),XQ(c)
        • Q(c);::R1(F),XQ(c)
      • Refutation
        • Q(c);CHECK,XR(F)
    • Try
      • K(G);P-FLIGHT,P_SPINR(F)
      • Vars
        • Q(c);CHECK,N_PINR(F),OGATEB::QAB(K),XQ(c)
        • Q(c);N_PINR(F),OGATE,XS(I)::R1(H)
        • Q(c);N_PINR(F),XR(H)::S(D),XQ(c)
        • Q(c);N_PINR(F),OGATE::R1(H),XQ(c)
        • Q(c);::R1(F),XQ(c)
      • Refutation
        • Q(c);CHECK,XR(F)
    • Try
      • K(G);P_SPINR(F),S_FLIGHT
      • Vars
        • Q(c);CHECK,N_PINR(F),XS(D)::R(F),XQ(c)
        • Q(c);CHECK,N_PINR(F),OGATEB::QAB(K),XQ(c)
        • Q(c);N_PINR(F),OGATE,XS(I)::R1(H)
        • Q(c);N_PINR(F),XR(H)::S(D),XQ(c)
        • Q(c);N_PINR(F),OGATE::R1(H),XQ(c)
        • Q(c);::R1(F),XQ(c)
      • Refutation
        • Q(c);CHECK,XR(F)
    • Try
      • K(G);S_FLIGHT
      • Vars
        • Q(c);CHECK,OGATE,XS(D)::R(F),XQ(c)
        • Q(c);CHECK,OGATEB::QAB(K),XQ(c)
        • Q(c);OGATE,XS(I)::R1(H)
        • Q(c);XR(H)::S(D),XQ(c)
        • Q(c);OGATE::R1(H),XQ(c)
        • Q(c);OGATE::R1(F),XQ(c)
      • Refutation
        • Q(c);XR(F)
    • Try
      • K(G);P-FLIGHT
      • Vars
        • Q(c);CHECK,OGATEB::QAB(K),XQ(c)
        • Q(c);OGATE,XS(I)::R1(H)
        • Q(c);XR(H)::S(D),XQ(c)
        • Q(c);OGATE,P_PINR(F)::R1(H),XQ(c)
        • Q(c);OGATE::R1(F),XQ(c)
      • Refutation
        • Q(c);CHECK,XR(F)
    • Try
      • Q(K);P_PINQ(c)
      • Threat
        • QAB1(K),XQ(c)
      • Vars
        • Q(c);CHECK,OGATEB::QAB(K),XQ(c)
      • Refutation
        • Q(c);CHECK,N_SPINQ(c),XQ(K)
    • Try
      • Q(K);P_PINQ(c)
      • Threat
        • QAB1(K),XQ(c)
      • Vars
        • Q(c);CHECK,OGATEB::QAB(K),XQ(c)
      • Refutation
        • Q(c);CHECK,N_SPINQ(c),XQ(K)
  • Actual
    • B(C);
    • Vars
      • Q(c);CHECK,OGATE,XS(D)::R(F),XQ(c)
      • Q(c);CHECK,OGATEB::QAB(K),XQ(c)
      • Q(c);CHECK,XR(H)::S(D),XQ(c)
      • Q(c);OGATE,P_PINR(H),XS(I)::R(H),XQ(c)
      • Q(c);XR(F)::S(I),XQ(c)
      • Q(c);OGATE::R1(H),XQ(c)
      • Q(c);OGATE::R1(F),XQ(c)
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