MESON Chess Problem Database

Problem Display
PID: 177749 (q5n1/2PQ3b/1p2P3/p3p3/3Bk3/1P2p1KB/1p2P3/8 w - - 0 1)

Svetilsky, Anatoly Volodimirovich

Comm., Chepizhni-50 JT, 1985

q5n1/2PQ3b/1p2P3/p3p3/3Bk3/1P2p1KB/1p2P3/8

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Bg2#
  • Tries
    • 1.Bxb2?
      • threat
        • 2.Qd3#
      • 1...Qd5
        • 2.Qxh7#
      • 1...Qa6
        • 2.Qc6#
      • 1...Qd8!
    • 1.Qc6+?
      • 1...Kxd4
        • 2.Qc4#
      • 1...Qxc6!
    • 1.e7?
      • threat
        • 2.Bg2#
      • 1...exd4
        • 2.Qe6#
      • 1...Qd5
        • 2.Qg4#
      • 1...Qf8!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qc4#
      • 1...exd4
        • 2.Bg2#
      • 1...Qd5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(g);SBLOCK::B(D)
  • Tries
    • Try
      • B(E);XP(a)
      • Threat
        • QAB1(H)
      • Vars
        • Q(h);SBLOCK::QAB(H),XB(g)
        • Q(h);N_GUARD::QAB(H)
      • Refutation
        • Q(h);
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);OGATEB,P-FLIGHT,XB(E)::QAR1(H)
      • Refutation
        • Q(h);XQ(H)
    • Try
      • P(F);
      • Threat
        • B(D)
      • Vars
        • P(e);OGATEB,SBLOCK,XB(E)::QAR2(H)
        • Q(h);SBLOCK::QAR2(H)
      • Refutation
        • Q(h);
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XP(e)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XB(E)::QAR1(H)
      • P(e);SBLOCK,XB(E)::B(D)
      • Q(h);SBLOCK::QAB1(H)
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