MESON Chess Problem Database

Problem Display
PID: 177841 (6B1/3K2B1/1p1P1Q2/2P1N3/1p1k1pP1/2q2P2/3bPp2/6r1 w - - 0 1)

Velidov, Aleksandr

1st HM., Sahs (Latvia), 1983

6B1/3K2B1/1p1P1Q2/2P1N3/1p1k1pP1/2q2P2/3bPp2/6r1

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.Sd3#
    • 1...bxc5
      • 2.Sc4#
  • Tries
    • 1.Qe6?
      • threat
        • 2.Sd3#
      • 1...Ke3
        • 2.Sc4#
      • 1...Kxc5
        • 2.Qd5#
      • 1...Qxc5
        • 2.Sc6#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Qe3
        • 2.Qc4#
      • 1...Rxg4!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Sc4#
      • 1...Ke3
        • 2.Qe4#
      • 1...Kxc5
        • 2.Sd3#
      • 1...Qxc5
        • 2.Qd3#
      • 1...Rxg4
        • 2.Sxg4#
      • 1...Qc4
        • 2.Sxc4#
      • 1...Qe3
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(b);SBLOCK::QAB(G)+S(E)
    • P(h);SBLOCK,XP(D)::QAB(G)+S(E)
  • Tries
    • Try
      • Q(G);
      • Threat
        • B(I)+S(E)
      • Vars
        • K(f);S_FLIGHT::QAR(G)+S(E),DCHECK
        • K(f);S_FLIGHT,XP(D)::QAR1(G)
        • Q(d);SBLOCK,XP(D)::B(I)+S(E),DCHECK
        • Q(d);::B(I)+S(E),XQ(d)
        • Q(d);N_GUARD,SBLOCK::QAR1(G)
      • Refutation
        • R(a);XP(C)
  • Actual
    • Q(G);
    • Threat
      • B(I)+S(E)
    • Vars
      • K(f);S_FLIGHT::QAR1(G)
      • K(f);S_FLIGHT,XP(D)::QAR(G)+S(E),DCHECK
      • Q(d);N_GUARD,SBLOCK,XP(D)::QAR1(G)
      • R(a);XP(C)::B(I)+S(E),XR(a)
      • Q(d);::B(I)+S(E),XQ(d)
      • Q(d);SBLOCK::B(I)+S(E),DCHECK
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