MESON Chess Problem Database

Problem Display
PID: 108818 (4R3/4N2p/1p3pp1/3Q4/RNn1Pk1P/2K3p1/6P1/8 w - - 0 1)

Lazdinits, Eriks

Latvian Championship, 1959

4R3/4N2p/1p3pp1/3Q4/RNn1Pk1P/2K3p1/6P1/8

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5+?
      • 1...Ke3
        • 2.Qf3#
      • 1...gxf5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Sed5#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxe4
        • 2.Qd4#
      • 1...Ke5
        • 2.Sxg6#
      • 1...Se3
        • 2.Sd3#
      • 1...Se5
        • 2.Sbd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(G)
      • Refutation
        • P(f);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • S(H)
    • Vars
      • K(c);S_FLIGHT::QAR1(G)
      • K(c);OGATEB,P-FLIGHT,XP(E)::QAR1(G)
      • K(c);S_FLIGHT::R(I)+S(H),DCHECK,XP(f)
      • S(b);SBLOCK::S(D)
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