MESON Chess Problem Database

Problem Display
PID: 137188 (8/2P2K2/6pb/1p1p2N1/1B1kB3/1p1q1PN1/2Q2P2/5b2 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Lebedev, Danilo

StrateGems, 1998

8/2P2K2/6pb/1p1p2N1/1B1kB3/1p1q1PN1/2Q2P2/5b2

#2

9 + 8

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Qc3#
    • 1...Qxe4
      • 2.Qc3#
    • 1...Qd1
      • 2.Qc3#
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qxf3+
      • 2.Sxf3#
    • 1...dxe4
      • 2.Qc5#
  • Tries
    • 1.Se2+?
      • 1...Ke5
        • 2.f4#
      • 1...Qxe2
        • 2.Qc3#
      • 1...Bxe2!
    • 1.Sf5+?
      • 1...Ke5
        • 2.Bd6#
      • 1...gxf5!
    • 1.Qb2+?
      • 1...Qc3
        • 2.Qxc3#
      • 1...Kc4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxd5#
      • 1...Qxf3+
        • 2.Sxf3#
      • 1...Ke5
        • 2.Qf6#
      • 1...Qxe4
        • 2.Qc3#
      • 1...dxe4
        • 2.Qc5#
      • 1...Qc4
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::QAB1(A)
    • Q(c);N_GUARD,XB(F)::QAB1(A)
    • Q(c);N_GUARD::QAB1(A),XQ(c)
    • Q(c);CHECK,XP(C)::S(G),XQ(c)
    • P(f);XB(F)::QAB1(A)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);S_FLIGHT::P(C)
        • Q(c);XS(D)::QAB1(A)
      • Refutation
        • B(a);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(d);S_FLIGHT::B(E)
      • Refutation
        • P(g);XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAB1(A),XQ(c)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(f)
    • Vars
      • Q(c);CHECK,XP(C)::S(G),XQ(c)
      • K(d);S_FLIGHT::QAB1(A)
      • Q(c);N_GUARD,XB(F)::QAB1(A)
      • P(f);XB(F)::QAB1(A)
      • Q(c);SBLOCK::QAB(A)
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