MESON Chess Problem Database

Problem Display
PID: 63543 (N1N1K3/2p1P3/R1n2Pp1/2pkP3/2Rb2Q1/1P1p4/3P1P2/5B2 w - - 0 1)

Shedey, Sergey Oleksandrovich

Valuska, Jan

1st HM., 64 Shakhmatnoe obozrenie, 1974

N1N1K3/2p1P3/R1n2Pp1/2pkP3/2Rb2Q1/1P1p4/3P1P2/5B2

#2

13 + 7

3771 FIDE Album (1974-1976) 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Bg2#
    • 1...Sxe5
      • 2.Sxc7#
  • Tries
    • 1.Qe4+?
      • 1...Ke6
        • 2.Sxc7#
        • 2.Bh3#
        • 2.Rxc6#
      • 1...Kxe4!
    • 1.Qf4?
      • threat
        • 2.Sxc7#
      • 1...Ke6
        • 2.Sxc7#
      • 1...Bxe5!
    • 1.f4?
      • threat
        • 2.Bg2#
      • 1...Ke4
        • 2.Bg2#
      • 1...Sxe5!
  • Keys
    • 1.Qg5!
      • 1...Ke4
        • 2.Bg2#
      • 1...Ke6
        • 2.Sxc7#
      • 1...Bxf2
        • 2.Sxc7#
      • 1...Bxe5
        • 2.Sxc7#
      • 1...Sxe5
        • 2.Bg2#
      • 1...Sxe7
        • 2.Bg2#
      • 1...Ba1
        • 2.Sxc7#
      • 1...Bb2
        • 2.Sxc7#
      • 1...Bc3
        • 2.Sxc7#
      • 1...Be3
        • 2.Sxc7#
      • 1...Sb4
        • 2.Bg2#
      • 1...Sa5
        • 2.Bg2#
      • 1...Sa7
        • 2.Bg2#
      • 1...Sb8
        • 2.Bg2#
      • 1...Sd8
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK,XP(G)::B(A)
    • S(e);SBLOCK,XP(G)::S(K),XP(g)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • K(d);P_SPINB(b),S_FLIGHT,XQ(F)
    • Try
      • Q(F);
      • Threat
        • S(K),XP(g)
      • Vars
        • K(d);P_SPINS(e),S_FLIGHT::S(K),XP(g)
      • Refutation
        • B(b);XP(G)
    • Try
      • P(C);
      • Threat
        • B(A)
      • Vars
        • K(d);P_SPINB(b),S_FLIGHT::B(A)
      • Refutation
        • S(e);XP(G)
  • Actual
    • Q(F);
    • Vars
      • K(d);P_SPINB(b),S_FLIGHT::B(A)
      • K(d);P_SPINS(e),S_FLIGHT::S(K),XP(g)
      • B(b);XP(C)::S(K),XP(g)
      • B(b);P_SPINB(b),XP(G)::S(K),XP(g)
      • S(e);P_SPINS(e),XP(G)::B(A)
      • S(e);XP(J)::B(A)
      • B(b);::S(K),XP(g)
      • S(e);::B(A)
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