MESON Chess Problem Database

Problem Display
PID: 178593 (3Q4/1B1N1K2/n1r1p3/1N1k1p2/8/3P3p/2n2p1q/8 w - - 0 1)

Markovsky, Grigory F

Boletim da UBP, 1981

3Q4/1B1N1K2/n1r1p3/1N1k1p2/8/3P3p/2n2p1q/8

#2

6 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sf8+?
      • 1...Ke5
        • 2.Sg6#
      • 1...Qd6
        • 2.Qxd6#
      • 1...Kc5!
    • 1.Qb6?
      • threat
        • 2.Bxc6#
        • 2.Qxc6#
      • 1...Qd6
        • 2.Sc3#
      • 1...Scb4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sab4
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Qc7!
    • 1.Qf6?
      • threat
        • 2.Qxe6#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qd6
        • 2.Sc3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc5
        • 2.Sb6#
      • 1...e5
        • 2.Bxc6#
        • 2.Qxc6#
        • 2.Qd6#
        • 2.Qe6#
      • 1...Sc7!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxe6#
      • 1...Qe5
        • 2.Sb6#
      • 1...Qd6
        • 2.Qxd6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...e5
        • 2.Sb6#
        • 2.Sf6#
        • 2.Qd6#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);N_SPINR(h),P-FLIGHT::S(D)
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(F),XQ(c)
      • Refutation
        • K(e);N_SPINR(h),P-FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);SBLOCK::S(B)
        • S(a);N_GUARD::QAR1(F)
        • S(a);N_GUARD::QAR1(F),XS(a)
        • S(g);N_GUARD::QAR1(F)
      • Refutation
        • Q(c);P_PINS(D)
    • Try
      • Q(F);
      • Threat
        • QAB1(F),XP(i)
      • Vars
        • Q(c);N_GUARD::QAR1(F),XQ(c)
        • Q(c);SBLOCK::S(B)
        • S(a);N_GUARD::QAR1(F),XS(a)
        • S(g);SBLOCK::S(D)
      • Refutation
        • S(g);
  • Actual
    • Q(F);
    • Threat
      • QAB1(F),XP(i)
    • Vars
      • Q(c);SBLOCK::S(D)
      • Q(c);N_GUARD::QAR1(F),XQ(c)
      • S(a);SBLOCK::S(B)
      • S(g);N_GUARD::QAR1(F),XS(g)
      • S(g);N_GUARD::QAR1(F)
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