MESON Chess Problem Database

Problem Display
PID: 37445 (1n3r2/P2p4/3p1Q1p/3N2q1/2BPk1P1/4P3/4P2n/K3N3 w - - 0 1)

Shanshin, Valery Yurevich

Slesarenko, Anatoly Vasilevich

Buletin Problemistic, 1992

1n3r2/P2p4/3p1Q1p/3N2q1/2BPk1P1/4P3/4P2n/K3N3

#2

10 + 8

3705 Album Russia (1992-1994) 2000
5416 FIDE Album (1992-1994) (Annexe) 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.exf3#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Sc3#
      • 1...Qxd5
        • 2.Bd3#
      • 1...Qxe3!
    • 1.Qxg5?
      • threat
        • 2.Sc3#
        • 2.Bd3#
        • 2.Qe7#
      • 1...Sxg4
        • 2.Sc3#
        • 2.Bd3#
      • 1...Rf4
        • 2.Bd3#
        • 2.Qxf4#
        • 2.Qe7#
      • 1...Rf5
        • 2.Sc3#
        • 2.Qxf5#
      • 1...Rf6
        • 2.Sc3#
        • 2.Sxf6#
        • 2.Bd3#
      • 1...Rf7
        • 2.Sc3#
        • 2.Bd3#
      • 1...Re8
        • 2.Sc3#
        • 2.Sf6#
        • 2.Bd3#
        • 2.Qf4#
        • 2.Qf5#
        • 2.Qg6#
      • 1...Sf3
        • 2.Sc3#
        • 2.Bd3#
      • 1...Sc6
        • 2.Sc3#
        • 2.Bd3#
      • 1...hxg5!
    • 1.Qf2?
      • threat
        • 2.Sc3#
      • 1...Qxe3
        • 2.Qxe3#
      • 1...Qxd5
        • 2.Bd3#
      • 1...Rxf2!
    • 1.Qxd6?
      • threat
        • 2.Bd3#
      • 1...Qxe3
        • 2.Qe5#
      • 1...Qxd5!
    • 1.Qe6+?
      • 1...Qe5
        • 2.Bd3#
      • 1...dxe6!
    • 1.a8Q?
      • threat
        • 2.Bd3#
      • 1...Qxe3
        • 2.Sc3#
      • 1...Qxd5
        • 2.Qe7#
      • 1...Sc6!
    • 1.a8B?
      • threat
        • 2.Bd3#
      • 1...Qxe3
        • 2.Sc3#
      • 1...Qxd5
        • 2.Qe7#
      • 1...Sc6!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Sc3#
      • 1...Qxe3
        • 2.Qe7#
      • 1...Qxd5
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE::P(C),XS(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(H)
      • Vars
        • Q(c);SBLOCK,XS(H)::B(E)
      • Refutation
        • Q(c);XP(D)
    • Try
      • Q(I);XQ(c)
      • Threat
        • DUALS(3)
      • Refutation
        • P(e);XQ(I)
    • Try
      • Q(I);
      • Threat
        • S(H)
      • Vars
        • Q(c);OGATE,XP(D)::QAR1(I),XQ(c)
        • Q(c);SBLOCK,XS(H)::B(E)
      • Refutation
        • R(h);XQ(I)
    • Try
      • Q(I);XP(d)
      • Threat
        • B(E)
      • Vars
        • Q(c);N_GUARD,XP(D)::QAR1(I)
      • Refutation
        • Q(c);XS(H)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(c);P_PINP(F),P_SPINQ(c)::B(E)
      • Refutation
        • P(f);XQ(I)
    • Try
      • P(J);
      • Threat
        • B(E)
      • Vars
        • Q(c);SBLOCK,XP(D)::QAB(J)+S(H),DCHECK
        • Q(c);N_GUARD,P_SPINQ(c),XS(H)::QAR(I)
      • Refutation
        • S(g);
    • Try
      • P(J);
      • Threat
        • B(E)
      • Vars
        • Q(c);SBLOCK,XP(D)::B(J)+S(H),DCHECK
        • Q(c);N_GUARD,P_SPINQ(c),XS(H)::QAR(I)
      • Refutation
        • S(g);
  • Actual
    • S(B);
    • Threat
      • S(H)
    • Vars
      • Q(c);N_GUARD,XP(D)::QAR(I)
      • Q(c);SBLOCK,XS(H)::B(E)
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