MESON Chess Problem Database

Problem Display
PID: 81777 (3R4/1p3K2/1B1P4/R1Pk1N2/8/1P1N1P1Q/4B2b/3b3q w - - 0 1)

Svitek, Miroslav

Probleemblad, 2008

3R4/1p3K2/1B1P4/R1Pk1N2/8/1P1N1P1Q/4B2b/3b3q

#2

12 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Sb4#
      • 2.Se7#
    • 1...Qxf3
      • 2.Qxf3#
    • 1...Be5
      • 2.Sb4#
    • 1...Bxd6
      • 2.Rxd6#
  • Tries
    • 1.Se3+?
      • 1...Kc6
        • 2.Sb4#
        • 2.Rc8#
        • 2.Qd7#
        • 2.Qc8#
      • 1...Kd4!
    • 1.Re8?
      • threat
        • 2.Sb4#
      • 1...Kc6
        • 2.Se7#
      • 1...Qe1!
    • 1.Qg4?
      • threat
        • 2.Se7#
        • 2.Qe4#
      • 1...Kc6
        • 2.Sb4#
        • 2.Se7#
        • 2.Qe4#
      • 1...Qxf3
        • 2.Qxf3#
      • 1...Bf4!
    • 1.Qh8?
      • threat
        • 2.Sb4#
        • 2.Se7#
      • 1...Kc6
        • 2.Sb4#
        • 2.Se7#
      • 1...Bxb3
        • 2.Sb4#
      • 1...Qe1
        • 2.Se7#
      • 1...Be5
        • 2.Sb4#
      • 1...Qxf3!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Se7#
      • 1...Kc6
        • 2.Sb4#
      • 1...Qxf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE,P_PINS(H),XP(D)::QAB(E),XQ(b)
    • B(c);SBLOCK::S(C)
    • B(c);OGATE,P_SPINB(c),XP(J)::R1(L),XB(c)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(L);
      • Threat
        • S(C)
      • Vars
        • K(d);S_FLIGHT::S(H)
      • Refutation
        • Q(b);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);OGATE,P_PINS(H),XP(D)::QAB(E),XQ(b)
      • Refutation
        • B(c);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(B)::S(C)
        • Q(b);::S(H)
        • B(c);::S(C)
      • Refutation
        • Q(b);P_PINS(H),XP(D)
  • Actual
    • R(F);
    • Threat
      • S(H)
    • Vars
      • K(d);S_FLIGHT::S(C)
      • Q(b);OGATE,P_PINS(H),XP(D)::QAB(E),XQ(b)
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