MESON Chess Problem Database

Problem Display
PID: 152780 (1b1r4/4n3/p4N2/p5Q1/2p2p2/1PBkp1n1/N7/1K1B4 w - - 0 1)

Basisty, Mark Borisovich

HM., Zadachi i Etyudi, 2004

1b1r4/4n3/p4N2/p5Q1/2p2p2/1PBkp1n1/N7/1K1B4

#2

7 + 10

15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Bc2#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Bc2#
      • 1...e2
        • 2.Qf3#
      • 1...f3
        • 2.Qxc4#
      • 1...cxb3!
    • 1.Qxa5?
      • threat
        • 2.Sc1#
      • 1...cxb3
        • 2.Qxa6#
      • 1...Se2
        • 2.Bc2#
      • 1...e2!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qxc4#
      • 1...cxb3
        • 2.Sc1#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rc8
        • 2.Qd4#
      • 1...e2
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(c);SBLOCK::B(B)
  • Tries
    • Try
      • Q(F);
      • Threat
        • B(B)
      • Vars
        • P(b);OGATEB::QAR2(F)
        • P(e);OGATE::QAB1(F),XP(d)
      • Refutation
        • P(d);XP(D)
    • Try
      • Q(F);XP(f)
      • Threat
        • S(C)
      • Vars
        • P(d);OGATEB,XP(D)::QAB(F),XP(g)
        • S(c);SBLOCK::B(B)
      • Refutation
        • P(b);
  • Actual
    • Q(F);
    • Threat
      • QAB1(F),XP(d)
    • Vars
      • P(d);XP(D)::S(C)
      • R(j);N_GUARD::QAR1(F),XR(j)
      • R(j);N_GUARD::QAR1(F)
      • P(b);SBLOCK::B(B)
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