MESON Chess Problem Database

Problem Display
PID: 95036 (3N2K1/1r1p4/Rn4PQ/P2k4/p2P4/1N1P3n/8/5B1b w - - 0 1)

Semrinec, Marian

Pravda, 2003

3N2K1/1r1p4/Rn4PQ/P2k4/p2P4/1N1P3n/8/5B1b

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...d6
        • 2.Qc6#
      • 1...Rc7!
    • 1.Qe3?
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Sc4
        • 2.dxc4#
      • 1...d6
        • 2.Qe6#
      • 1...Be4!
    • 1.Qf4?
      • threat
        • 2.Qe5#
      • 1...Sc4
        • 2.Qf7#
        • 2.dxc4#
      • 1...d6
        • 2.Qf5#
      • 1...Sxf4!
    • 1.Qg5+?
      • 1...Kd6
        • 2.Qc5#
        • 2.Qe5#
      • 1...Sxg5!
    • 1.Qf8?
      • threat
        • 2.Qc5#
      • 1...d6
        • 2.Qf5#
      • 1...Rc7!
    • 1.Qh5+?
      • 1...Kd6
        • 2.Qc5#
        • 2.Qe5#
      • 1...Sg5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Sc4
        • 2.Qf7#
      • 1...d6
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(e)::QAB1(H)
        • S(e);N_GUARD::QAB1(H),XS(e)
        • P(g);N_GUARD::QAB1(H)
      • Refutation
        • R(f);
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(e)::QAB1(H)
        • S(e);OGATE::P(C),XS(e)
        • P(g);N_GUARD::QAB1(H)
      • Refutation
        • B(a);
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • P(g);SBLOCK::QAR2(H)
      • Refutation
        • S(b);XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • S(b);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • P(g);SBLOCK::QAR2(H)
      • Refutation
        • R(f);
    • Try
      • Q(H);CHECK
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(e)::QAB1(H)
      • S(e);::QAB(H)
      • P(g);OGATE,SBLOCK::QAB(H),XR(f)
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