MESON Chess Problem Database

Problem Display
PID: 106059 (1B1r1N2/1p6/p1kqQbNR/P7/1PP3B1/2pPp3/8/2K4b w - - 0 1)

Daishkovsky, Aleksandr

Raketa, 1989

1B1r1N2/1p6/p1kqQbNR/P7/1PP3B1/2pPp3/8/2K4b

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.Qxd6#
    • 1...Re8
      • 2.Qxd6#
    • 1...Rxf8
      • 2.Qxd6#
    • 1...Bf3
      • 2.Bxf3#
    • 1...Bd4
      • 2.Se7#
    • 1...Bh4
      • 2.Se5#
    • 1...Be5
      • 2.Sxe5#
      • 2.Se7#
    • 1...Bg5
      • 2.Se5#
    • 1...Be7
      • 2.Se5#
      • 2.Sxe7#
    • 1...Bg7
      • 2.Se7#
    • 1...Bh8
      • 2.Se7#
  • Tries
    • 1.Qd5+?
      • 1...Qxd5
        • 2.Se7#
      • 1...Bxd5!
    • 1.Qd7+?
      • 1...Qxd7
        • 2.Se5#
      • 1...Rxd7!
    • 1.Qc8+?
      • 1...Qc7
        • 2.Qxc7#
      • 1...Rxc8!
    • 1.Qe4+?
      • 1...Qd5
        • 2.Se5#
        • 2.Se7#
      • 1...Bxe4!
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Qb6#
      • 1...Qxb4
        • 2.Se5#
      • 1...Qc7
        • 2.Qc5#
      • 1...b6
        • 2.Qxb6#
      • 1...Qf4
        • 2.Se7#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qd4
        • 2.Se7#
      • 1...Bd4
        • 2.Se7#
      • 1...Bg5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • R(i);N_GUARD::QAR1(G),XQ(f)
    • R(i);N_GUARD,XS(K)::QAR1(G),XQ(f)
    • B(a);N_GUARD::B(E),XB(a)
    • B(g);N_GUARD::S(H)
  • Tries
    • Try
      • Q(G);CHECK,N_PINQ(f)
      • Vars
        • Q(f);XQ(G)::S(H)
      • Refutation
        • B(a);XQ(G)
    • Try
      • Q(G);CHECK,N_PINQ(f)
      • Vars
        • Q(f);XQ(G)::S(H)
      • Refutation
        • R(i);XQ(G)
    • Try
      • Q(G);CHECK,N_PINQ(f)
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::QAR1(G),XQ(f)
      • Refutation
        • R(i);XQ(G)
    • Try
      • Q(G);CHECK,N_PINQ(f)
      • Refutation
        • B(a);XQ(G)
  • Actual
    • Q(G);N_PINQ(f),XP(c)
    • Threat
      • QAR1(G)
    • Vars
      • Q(f);N_GUARD,S_CUTB(g),XP(C)::S(H)
      • Q(f);N_GUARD::QAR1(G)
      • P(h);::QAR1(G),XP(h)
      • Q(f);N_GUARD,P_PINQ(G),S_CUTB(g)::S(H)
      • Q(f);N_GUARD::QAR1(G),XQ(f)
      • Q(f);N_GUARD,S_CUTB(g)::S(H)
      • B(g);N_GUARD,S_CUTQ(f)::S(H)
      • B(g);N_GUARD,P_PINQ(G),S_CUTQ(f)::S(H)
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