MESON Chess Problem Database

Problem Display
PID: 103226 (K3N1rb/p7/pp1R4/rk1N1p2/1PR5/1P6/8/4Qb1q w - - 0 1)

Mazul, Waldemar

Szachy, 1978

K3N1rb/p7/pp1R4/rk1N1p2/1PR5/1P6/8/4Qb1q

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5+
      • 2.Rxd5#
    • 1...Qg1
      • 2.Sc7#
    • 1...Qh2
      • 2.Sc7#
    • 1...Qh3
      • 2.Sc7#
    • 1...Qh4
      • 2.Sc7#
    • 1...Qh5
      • 2.Sc7#
    • 1...Qh6
      • 2.Sc7#
    • 1...Rg1
      • 2.Sc7#
    • 1...Rg2
      • 2.Sdc7#
      • 2.Sec7#
    • 1...Rg3
      • 2.Sc7#
    • 1...Rg4
      • 2.Sc7#
    • 1...Rg5
      • 2.Sc7#
    • 1...Rg6
      • 2.Sc7#
    • 1...Rxe8+
      • 2.Qxe8#
  • Tries
    • 1.Kb8?
      • threat
        • 2.Sc7#
      • 1...Rxe8+
        • 2.Qxe8#
      • 1...Qxd5
        • 2.Rxd5#
      • 1...Rg7
        • 2.Sc3#
      • 1...Qh7!
    • 1.Rc8?
      • threat
        • 2.Sc7#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Rxe8
        • 2.Qxe8#
      • 1...Qh7
        • 2.Qxf1#
      • 1...Rg7!
    • 1.Qxf1?
      • threat
        • 2.Rc5#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Qxf1
        • 2.Sc7#
      • 1...Rxe8+!
    • 1.Qe2?
      • threat
        • 2.Rc5#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Rxe8+
        • 2.Qxe8#
      • 1...Bxe2!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qd7#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Rxe8+
        • 2.Qxe8#
      • 1...Qh7
        • 2.Sc7#
      • 1...Rg7
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(b);CHECK,OGATE,P_PINS(H),XS(E)::R(F),XQ(b)
    • Q(b);N_PINS(E),P_PINS(H)::S(E)
    • R(i);::S(H)
    • R(i);CHECK,OGATE,XS(H)::QAB(A),XR(i)
  • Tries
    • Try
      • K(G);N_SPINS(E),P-FLIGHT,P_SPINS(H)
      • Threat
        • S(E)
      • Vars
        • R(i);CHECK,OGATE,XS(H)::QAB(A),XR(i)
        • Q(b);OGATE,XS(E)::R(F),XQ(b)
        • R(i);N_PINS(H),S_CUTB(j)::S(E)
      • Refutation
        • Q(b);
    • Try
      • R(D);
      • Threat
        • S(H)
      • Vars
        • Q(b);CHECK,OGATE,XS(E)::R(F),XQ(b)
        • R(i);OGATE,P_PINR(D),XS(H)::QAB(A),XR(i)
        • Q(b);N_GUARD,N_PINS(E)::QAB(A),XB(a)
      • Refutation
        • R(i);
    • Try
      • Q(A);XB(a)
      • Threat
        • QAB(A)+R(D),DCHECK
      • Vars
        • Q(b);CHECK,OGATE,P_PINS(H),XS(E)::R(F),XQ(b)
        • Q(b);N_PINS(E),P_PINS(H),XQ(A)::S(E)
      • Refutation
        • R(i);CHECK,XS(H)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(D),DCHECK
      • Vars
        • Q(b);CHECK,OGATE,P_PINS(H),XS(E)::R(F),XQ(b)
        • R(i);CHECK,OGATE,XS(H)::QAB(A),XR(i)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(b);CHECK,OGATE,P_PINS(H),XS(E)::R(F),XQ(b)
      • R(i);CHECK,OGATE,XS(H)::QAB(A),XR(i)
      • Q(b);N_PINS(E),P_PINS(H)::S(E)
      • R(i);::S(H)
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