MESON Chess Problem Database

Problem Display
PID: 15858 (2b4q/1p5p/1B1Nn3/2P1pRb1/2P2p2/4kp1P/Q6P/1B5K w - - 0 1)

Marandiuk, Mikhail Nazarovich

Rudenko, Valentin Fedorovich

3rd Prize, Probleemblad, 1988

2b4q/1p5p/1B1Nn3/2P1pRb1/2P2p2/4kp1P/Q6P/1B5K

#2

10 + 10

102 Probleemblad 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd2#
    • 1...Sxc5
      • 2.Bxc5#
    • 1...Sc7
      • 2.c6#
    • 1...Sg7
      • 2.c6#
    • 1...Sd8
      • 2.c6#
    • 1...Sf8
      • 2.c6#
  • Tries
    • 1.Kg1?
      • threat
        • 2.Qf2#
      • 1...f2+
        • 2.Qxf2#
      • 1...Kd4
        • 2.Qd2#
      • 1...Bh4!
    • 1.Se4?
      • threat
        • 2.Qd2#
        • 2.Qf2#
      • 1...f2
        • 2.Qxf2#
      • 1...Qd8
        • 2.Qf2#
      • 1...Bh4
        • 2.Qd2#
      • 1...Kd4!
    • 1.Ba5?
      • threat
        • 2.Qd2#
      • 1...Kd4
        • 2.Qf2#
      • 1...f2!
    • 1.Rxe5+?
      • 1...Kd4
        • 2.Qa1#
        • 2.Qb2#
      • 1...Qxe5!
    • 1.c6+?
      • 1...Sc5
        • 2.Bxc5#
      • 1...Sd4!
  • Keys
    • 1.Rxf4!
      • threat
        • 2.Re4#
      • 1...Kxf4
        • 2.Qd2#
      • 1...Bxf4
        • 2.Sf5#
      • 1...Sxf4
        • 2.c6#
      • 1...exf4
        • 2.Sf5#
      • 1...e4
        • 2.Rxe4#
      • 1...f2
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • K(a);S_FLIGHT::QAR2(C)
    • S(f);OGATE,P_SPINS(f),XP(G)::B(I),XS(f)
    • S(f);N_GUARD::B(I)+P(G)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • P(b);CHECK::QAB1(C),XP(b)
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • B(e);
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB1(C),XP(b)
        • Q(j);::QAB1(C)
        • B(e);::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(I);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);S_FLIGHT::QAB(C)
      • Refutation
        • P(b);
    • Try
      • R(H);CHECK,XP(d)
      • Refutation
        • Q(j);XR(H)
    • Try
      • P(G);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(I),XS(f)
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • R(H);XP(c)
    • Threat
      • R1(H)
    • Vars
      • K(a);S_FLIGHT,XR(H)::QAB(C)
      • B(e);SBLOCK,XR(H)::S(J)
      • S(f);N_GUARD,SBLOCK,XR(H)::B(I)+P(G)
      • P(d);SBLOCK,XR(H)::S(J)
      • P(d);::R1(H),XP(d)
      • P(b);::QAB1(C),XP(b)
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