MESON Chess Problem Database

Problem Display
PID: 7544 (8/1n4pB/1Q6/8/4Nk2/2B2P2/7n/2bKN3 w - - 0 1)

Rychkov, Vladimir Nikolaevich

3rd HM., Kanonik-70 JT, 1991

8/1n4pB/1Q6/8/4Nk2/2B2P2/7n/2bKN3

#2

7 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Ke2?
      • threat
        • 2.Sg2#
        • 2.Sd3#
      • 1...g6
        • 2.Qf6#
      • 1...Sc5
        • 2.Sg2#
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...Sxf3!
    • 1.Qg1?
      • threat
        • 2.Qg5#
      • 1...Sxf3
        • 2.Sd3#
      • 1...g5
        • 2.Qxg5#
      • 1...Sg4!
    • 1.Qf2?
      • threat
        • 2.Sg2#
        • 2.Sd3#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Sc5
        • 2.Sg2#
      • 1...g6!
    • 1.Qd6+?
      • 1...Ke3
        • 2.Bd4#
      • 1...Sxd6!
    • 1.Qf6+?
      • 1...Ke3
        • 2.Bd4#
        • 2.Qg5#
      • 1...gxf6!
    • 1.Qh6+?
      • 1...g5
        • 2.Qxg5#
      • 1...gxh6!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qg5#
      • 1...Ke3
        • 2.Qg5#
      • 1...Sxf3
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(e);N_GUARD::QAR2(F)
      • Refutation
        • S(b);XP(D)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • S(b);SBLOCK,XP(D)::S(B)
        • P(e);::QAB1(F),XP(e)
      • Refutation
        • S(b);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);OGATE,P_SPINS(b),XP(D)::QAR1(F),XS(b)
        • S(d);::S(B)
      • Refutation
        • P(e);
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::B(C)
      • Refutation
        • S(d);XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • P(e);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAB1(F),XP(e)
      • Refutation
        • P(e);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(c);S_FLIGHT::QAB(F)
      • S(b);SBLOCK,XP(D)::S(B)
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