MESON Chess Problem Database

Problem Display
PID: 10013 (5B2/R1q5/1p1N4/1p1p4/1kN2K2/2p4Q/P7/8 w - - 0 1)

Golovkov, Pyotr Tikhonovich

Problem (Zagreb), 1961

5B2/R1q5/1p1N4/1p1p4/1kN2K2/2p4Q/P7/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Qa3#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sd3#
      • 1...Qc4+
        • 2.Sdxc4#
      • 1...Qf7+
        • 2.Sdxf7#
      • 1...Kc5
        • 2.Qxc3#
      • 1...Qxd6
        • 2.Bxd6#
      • 1...Qh7
        • 2.Sdf7#
      • 1...c2
        • 2.Qa3#
      • 1...Qxa7!
    • 1.Qxc3+?
      • 1...Kc5
        • 2.Sb2#
        • 2.Sd2#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Rxc7#
      • 1...Kxc3!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Sd3#
      • 1...Qxd6+
        • 2.Bxd6#
      • 1...Qc4+
        • 2.Sdxc4#
      • 1...Qf7+
        • 2.Sxf7#
      • 1...Kc5
        • 2.Qxc3#
      • 1...Qxa7
        • 2.Sb7#
      • 1...cxb2
        • 2.Qa3#
      • 1...Qh7
        • 2.Sf7#
      • 1...c2
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAB1(B)
  • Tries
    • Try
      • S(C);N_SPINS(E)
      • Threat
        • S(C)
      • Vars
        • Q(f);CHECK,N_GUARD::B(G)+S(E),XQ(f)
        • K(b);S_FLIGHT::QAR2(B),XP(a)
        • Q(f);OGATE,P_PINS(C),P_SPINQ(f),XS(E)::B(G),XQ(f)
        • Q(f);N_GUARD::B(G)+S(E)
        • P(a);OGATE::QAB1(B)
      • Refutation
        • Q(f);XR(F)
    • Try
      • Q(B);CHECK,XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::B(G),XQ(f)
      • Q(f);CHECK,N_PINS(E)::B(G)+S(E),XQ(f)
      • K(b);S_FLIGHT::QAR2(B),XP(a)
      • Q(f);N_PINS(E),XR(F)::B(G)+S(E)
      • P(a);OGATE,XS(C)::QAB1(B)
      • Q(f);N_PINS(E)::B(G)+S(E)
      • P(a);OGATE::QAB1(B)
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