MESON Chess Problem Database

Problem Display
PID: 36856 (1q6/4R1P1/1b4pQ/p2p4/1Pbk1N2/3P4/3P4/5BK1 w - - 0 1)

Erokhin, Vladimir Alekseevich

5th HM., Kubbel MT, 1994

1q6/4R1P1/1b4pQ/p2p4/1Pbk1N2/3P4/3P4/5BK1

#2

9 + 7

3705 Album Russia (1992-1994) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Qxf4#
    • 1...Qh8
      • 2.gxh8Q#
      • 2.gxh8B#
  • Tries
    • 1.Re3?
      • threat
        • 2.Se2#
        • 2.Se6#
      • 1...Qxf4
        • 2.Qxf4#
      • 1...axb4
        • 2.Se6#
      • 1...Qe5
        • 2.Se2#
      • 1...Qd6
        • 2.Se2#
      • 1...Qc8
        • 2.Se2#
      • 1...Qe8
        • 2.Se2#
      • 1...Qg8
        • 2.Se2#
      • 1...Bxd3!
    • 1.Qg5?
      • threat
        • 2.Se6#
      • 1...Qxf4
        • 2.Qxf4#
      • 1...Bxd3
        • 2.Qxd5#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qc8
        • 2.Qf6#
        • 2.Qe5#
      • 1...Qg8
        • 2.Qf6#
        • 2.Qe5#
      • 1...Qd6!
    • 1.Qxg6?
      • threat
        • 2.Se2#
      • 1...Qxf4
        • 2.Qxb6#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Qe5
        • 2.Qxb6#
      • 1...axb4!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qf2#
      • 1...Qxf4
        • 2.Qxf4#
      • 1...Bxd3
        • 2.Se2#
      • 1...Qe5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(g);OGATE,XS(F)::QAR2(G),XQ(g)
    • Q(g);OGATE::PXQ(g)=Q
  • Tries
    • Try
      • R(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);OGATE,XS(F)::QAR2(G),XQ(g)
        • P(c);XP(E)::S(F)
        • Q(g);::S(F)
      • Refutation
        • B(a);XP(D)
    • Try
      • Q(G);
      • Threat
        • S(F)
      • Vars
        • Q(g);OGATE,XS(F)::QAR2(G),XQ(g)
        • B(a);N_GUARD,XP(D)::QAR1(G),XP(d)
        • Q(g);N_GUARD::QAB1(G),XQ(g)
      • Refutation
        • Q(g);
    • Try
      • Q(G);XP(f)
      • Threat
        • S(F)
      • Vars
        • Q(g);N_GUARD,XS(F)::QAB(G),XB(e)
        • B(a);OGATE,XP(D)::QAR1(G),XB(a)
        • Q(g);N_GUARD::QAB(G),XB(e)
      • Refutation
        • P(c);XP(E)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • Q(g);OGATE,P_SPINQ(g),XS(F)::QAR2(G),XQ(g)
      • B(a);SBLOCK,XP(D)::QAR(G)+S(F),DCHECK
      • Q(g);SBLOCK::QAR(G)+S(F),DCHECK
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