MESON Chess Problem Database

Problem Display
PID: 104374 (8/8/2K1p3/B7/2Bk4/8/4Q1n1/8 w - - 0 1)

Khramtsevich, Mikhail Nikolaevich

Lebedev, Leonid Arsentevich

Zvezda, 1985

8/8/2K1p3/B7/2Bk4/8/4Q1n1/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qd3#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Be5#
        • 2.Qd3#
      • 1...Se3
        • 2.Qd3#
      • 1...Se1
        • 2.Be5#
      • 1...Sf4
        • 2.Be5#
      • 1...e5
        • 2.Bxe5#
        • 2.Qd3#
      • 1...Kc3!
    • 1.Qg4+?
      • 1...Ke5
        • 2.Bc3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Ke3!
    • 1.Qe5+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kxe5!
  • Keys
    • 1.Qf3!
      • 1...Kxc4
        • 2.Qc3#
      • 1...Ke5
        • 2.Bc3#
      • 1...Se1
        • 2.Qf4#
      • 1...Se3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sh4
        • 2.Qf4#
      • 1...e5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR1(A)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(A)
        • S(a);::B(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::B(C)
        • S(a);N_GUARD,P_SPINS(a)::QAR2(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XB(B)::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT,XB(B)::QAR1(A)
      • K(b);S_FLIGHT::B(C)
      • S(a);N_GUARD::QAR2(A)
      • S(a);N_GUARD::QAR2(A),XS(a)
      • P(c);SBLOCK::QAR1(A)
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