MESON Chess Problem Database

Problem Display
PID: 93797 (1B2Q3/2q4r/1pR1N2p/1p1kN3/6p1/1P6/4R1b1/1BK5 w - - 0 1)

Klepacek, Miroslav

Sachove umeni (Ceskoslovensky sach), 1954

1B2Q3/2q4r/1pR1N2p/1p1kN3/6p1/1P6/4R1b1/1BK5

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Rxe5#
    • 1...Qd6
      • 2.Rxd6#
    • 1...Qd8
      • 2.Rd2#
    • 1...Qxc6+
      • 2.Qxc6#
    • 1...Qa7
      • 2.Rd2#
      • 2.Rd6#
    • 1...Qb7
      • 2.Rd2#
      • 2.Rd6#
    • 1...Qd7
      • 2.Rd2#
    • 1...Qe7
      • 2.Rd2#
    • 1...Qf7
      • 2.Rd2#
      • 2.Rd6#
    • 1...Qg7
      • 2.Rd2#
      • 2.Rd6#
    • 1...Qc8
      • 2.Rd2#
  • Tries
    • 1.Sxc7+?
      • 1...Rxc7
        • 2.Rd2#
      • 1...Kd4!
    • 1.Bxc7?
      • threat
        • 2.Rd2#
        • 2.Rd6#
      • 1...Rd7
        • 2.Rd2#
        • 2.Qxd7#
      • 1...Bf1
        • 2.Be4#
        • 2.Rd6#
      • 1...Be4
        • 2.Bxe4#
      • 1...Rxc7!
    • 1.Qd7+?
      • 1...Qd6
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...Qxd7
        • 2.Rd2#
      • 1...Rxd7!
    • 1.Qd8+?
      • 1...Qd6
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...Qxd8
        • 2.Rd2#
      • 1...Qd7
        • 2.Rd2#
      • 1...Rd7!
    • 1.b4?
      • threat
        • 2.Ba2#
      • 1...Qxc6+
        • 2.Qxc6#
      • 1...Qa7
        • 2.Rd2#
        • 2.Rd6#
      • 1...Be4!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Rd2#
      • 1...Qxc6+
        • 2.Sc4#
      • 1...Qxe5
        • 2.Rd6#
      • 1...Qd6
        • 2.Rxd6#
      • 1...Bf1
        • 2.Be4#
      • 1...Be4
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(g);N_PINR(F),OGATE,XS(E)::R1(C),XQ(g)
    • Q(g);N_PINR(F)::R1(F),XQ(g)
    • Q(g);N_PINR(F)::R(C)
    • Q(g);CHECK,OGATE,XR(F)::QAB1(I),XQ(g)
    • Q(g);::R(C)
  • Tries
    • Try
      • S(G);CHECK,N_SPINR(F),XQ(g)
      • Vars
        • R(h);P_PINR(F),XS(G)::R(C)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(H);N_SPINR(F),XQ(g)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::B(A),XB(a)
      • Refutation
        • R(h);P_PINR(F),XB(H)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(g);N_PINR(F),XQ(I)::R(C)
      • Refutation
        • R(h);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(g);N_PINR(F),XQ(I)::R(C)
        • Q(g);N_PINR(F),P_SPINQ(g)::R(C)
      • Refutation
        • R(h);P_SPINR(h)
    • Try
      • P(D);
      • Threat
        • B(A)
      • Vars
        • Q(g);CHECK,OGATE,XR(F)::QAB1(I),XQ(g)
      • Refutation
        • B(a);
  • Actual
    • Q(I);
    • Threat
      • R(C)
    • Vars
      • Q(g);CHECK,N_GUARD,SBLOCK,XR(F)::QAR(I)+S(E)
      • Q(g);N_PINR(F),P_SPINQ(g),XS(E)::R1(F)
      • Q(g);N_PINR(F)::R1(F),XQ(g)
      • B(a);N_GUARD::B(A)
      • B(a);N_GUARD::B(A),XB(a)
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