MESON Chess Problem Database

Problem Display
PID: 38176 (K2R4/b3B3/1p2pN1p/3Pk3/7q/2P4N/6P1/1Q6 w - - 0 1)

Antonov, Yuri Mikhailovich

Burmistrov, Sergey Gennadevich

6th Prize, Chepizhni-50 JT, 1984-1985

K2R4/b3B3/1p2pN1p/3Pk3/7q/2P4N/6P1/1Q6

#2

9 + 6

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sg4#
    • 1...Qf2
      • 2.Sg4#
      • 2.Qe4#
    • 1...Qg3
      • 2.Qe4#
    • 1...Qg5
      • 2.Qe4#
    • 1...Qxh3
      • 2.Qe4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qg4
      • 2.Sxg4#
    • 1...Qh5
      • 2.Qe4#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Sd7#
        • 2.Rxe6#
      • 1...Qxh3
        • 2.Qe4#
      • 1...exd5
        • 2.Sd7#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qa4
        • 2.Rxe6#
      • 1...Qg4
        • 2.Sxg4#
        • 2.Sd7#
      • 1...Qxf6!
    • 1.Qd3?
      • threat
        • 2.Sd7#
      • 1...Qxf6
        • 2.Bd6#
      • 1...Qxh3
        • 2.Qe4#
      • 1...exd5
        • 2.Qxd5#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qd4
        • 2.cxd4#
      • 1...Qa4!
    • 1.Qg6?
      • threat
        • 2.Bd6#
      • 1...Qxf6
        • 2.Bxf6#
      • 1...exd5
        • 2.Sd7#
      • 1...Qb4
        • 2.Qh5#
      • 1...Bb8!
  • Keys
    • 1.g4!
      • threat
        • 2.Qe4#
      • 1...Qxf6
        • 2.Qe1#
      • 1...Qxg4
        • 2.Sxg4#
      • 1...exd5
        • 2.Qf5#
      • 1...Qe1
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::S(F)
    • Q(a);N_GUARD::QAR1(A)
    • Q(a);N_GUARD,XS(D)::QAR1(A)
    • Q(a);N_GUARD,P_PINP(E)::QAR1(A),XQ(a)
    • Q(a);N_GUARD::S(F),XQ(a)
  • Tries
    • Try
      • R(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_GUARD,XS(D)::QAR1(A)
        • P(d);XP(E)::S(F)
        • Q(a);N_GUARD,P_PINP(E)::QAR1(A),XQ(a)
        • Q(a);::R1(I),XP(d)
      • Refutation
        • Q(a);XS(F)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • Q(a);SBLOCK,XS(F)::B(G)
        • Q(a);N_GUARD,XS(D)::QAR1(A)
        • P(d);OGATE,XP(E)::QAR1(A),XP(d)
        • Q(a);N_GUARD,P_PINP(E)::QAR1(A),XQ(a)
        • Q(a);OGATE::P(C),XQ(a)
      • Refutation
        • Q(a);
    • Try
      • Q(A);
      • Threat
        • B(G)
      • Vars
        • Q(a);OGATE,XS(F)::B(G),XQ(a)
        • P(d);SBLOCK,XP(E)::S(F)
        • Q(a);N_GUARD::QAR(A)
      • Refutation
        • B(f);
  • Actual
    • P(B);
    • Threat
      • QAR1(A)
    • Vars
      • Q(a);N_GUARD,XS(F)::QAR(A)
      • Q(a);XP(B)::S(F),XQ(a)
      • P(d);N_GUARD,XP(E)::QAR1(A)
      • Q(a);N_GUARD::QAR(A),XQ(a)
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