MESON Chess Problem Database

Problem Display
PID: 15740 (8/8/8/8/5Q2/K1N3N1/3pPp2/4k3 w - - 0 1)

Sushkov, Yuri Akimovich

Probleemblad, 1987

8/8/8/8/5Q2/K1N3N1/3pPp2/4k3

#2

5 + 3

4849 The Sushkov Theme 1999
268 Chess Life 2004

SOLUTION

  • SOUND
  • Sets
    • 1...f1Q
      • 2.Qxf1#
    • 1...f1S
      • 2.Qxf1#
    • 1...f1B
      • 2.Qxf1#
    • 1...f1R
      • 2.Qxf1#
  • Tries
    • 1.Sd1?
      • 1...f1Q
        • 2.Qxf1#
      • 1...f1S
        • 2.Qxf1#
      • 1...f1B
        • 2.Qxf1#
      • 1...f1R
        • 2.Qxf1#
      • 1...Kxd1!
    • 1.Sge4?
      • threat
        • 2.Qxf2#
      • 1...Kf1
        • 2.Qxf2#
      • 1...f1Q
        • 2.Qxd2#
      • 1...f1S
        • 2.Qf2#
      • 1...f1B
        • 2.Qxd2#
        • 2.Qg3#
        • 2.Qf2#
        • 2.Qh4#
      • 1...f1R
        • 2.Qxd2#
      • 1...d1S!
  • Keys
    • 1.Sce4!
      • threat
        • 2.Qxd2#
      • 1...Kd1
        • 2.Qxd2#
      • 1...d1Q
        • 2.Qxf2#
      • 1...d1S
        • 2.Qd2#
      • 1...d1B
        • 2.Qd2#
        • 2.Qxf2#
      • 1...d1R
        • 2.Qxf2#
      • 1...f1S
        • 2.Qxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • P(c);OGATE::QAR1(E),XQ(c)
    • P(c);OGATE::QAR1(E),XS(c)
    • P(c);OGATE::QAR1(E),XB(c)
    • P(c);OGATE::QAR1(E),XR(c)
  • Tries
    • Try
      • S(C);
      • Vars
        • P(c);OGATE::QAR1(E),XQ(c)
        • P(c);OGATE::QAR1(E),XS(c)
        • P(c);OGATE::QAR1(E),XB(c)
        • P(c);OGATE::QAR1(E),XR(c)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • S(D);
      • Threat
        • QAB1(E),XP(c)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR1(E),XP(c)
        • P(c);SBLOCK::QAB1(E),XP(b)
        • P(c);::QAB1(E)
      • Refutation
        • P(b);
  • Actual
    • S(C);
    • Threat
      • QAB1(E),XP(b)
    • Vars
      • K(a);P-FLIGHT::QAR1(E),XP(b)
      • P(b);SBLOCK::QAB1(E),XP(c)
      • P(b);::QAB1(E)
      • P(c);OGATE::QAR1(E),XS(c)
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