MESON Chess Problem Database

Problem Display
PID: 168950 (8/3Q4/4p3/q2p4/p1pNNB2/3kP3/R1b5/4bK1B w - - 0 1)

Lilu, Zhorzh Aleksandrovich

3rd Comm., SuperProblem, 2015

8/3Q4/4p3/q2p4/p1pNNB2/3kP3/R1b5/4bK1B

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...dxe4
      • 2.Sb5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc1#
      • 1...Qd2
        • 2.Sc5#
      • 1...Bd2
        • 2.Sf2#
      • 1...c3!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Se5#
      • 1...Kxe4
        • 2.Qh7#
      • 1...Qc3
        • 2.Sc5#
      • 1...Qc7
        • 2.Sxe1#
      • 1...Bc3
        • 2.Sf2#
      • 1...d4
        • 2.Qxd4#
      • 1...e5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • P(g);XS(F)::QAR(H)+S(E)
  • Tries
    • Try
      • S(E);P_PINP(g)
      • Threat
        • S(E)
      • Vars
        • Q(f);N_GUARD,SBLOCK::S(F)
        • B(a);N_GUARD,SBLOCK::S(F)
      • Refutation
        • P(e);
  • Actual
    • S(E);P_PINP(g)
    • Threat
      • S(E)
    • Vars
      • K(c);N_SPINP(g),OGATEB,S_FLIGHT,XS(F)::QAB(H)
      • Q(f);N_GUARD,SBLOCK::S(F)
      • Q(f);N_GUARD::S(E),XB(a)
      • B(a);N_GUARD,SBLOCK::S(F)
      • P(g);OGATE::QAR1(H),XP(g)
      • P(h);::S(E),XP(h)
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