MESON Chess Problem Database

Problem Display
PID: 108816 (4BR2/7b/7N/R3P3/1n2kp2/1N6/1KP1P3/5nB1 w - - 0 1)

Lazdinits, Eriks

Latvian Championship, 1957

4BR2/7b/7N/R3P3/1n2kp2/1N6/1KP1P3/5nB1

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Bxg6#
    • 1...Bg8
      • 2.Bg6#
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sh2
      • 2.Sd2#
    • 1...Sg3
      • 2.Sd2#
    • 1...Sa2
      • 2.Bc6#
    • 1...Sxc2
      • 2.Bc6#
    • 1...Sd3+
      • 2.cxd3#
    • 1...Sa6
      • 2.Bc6#
    • 1...Sc6
      • 2.Bxc6#
    • 1...f3
      • 2.exf3#
  • Tries
    • 1.Bh5?
      • threat
        • 2.Bf3#
      • 1...Sd3+
        • 2.cxd3#
        • 2.exd3#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sh2
        • 2.Sd2#
      • 1...f3
        • 2.Bxf3#
        • 2.exf3#
      • 1...Sd5!
  • Keys
    • 1.Sg4!
      • 1...Sd3+
        • 2.cxd3#
      • 1...Sxc2
        • 2.Bc6#
      • 1...Bf5
        • 2.Sf6#
      • 1...Bg6
        • 2.Bxg6#
      • 1...Bg8
        • 2.Bg6#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sh2
        • 2.Sd2#
      • 1...Se3
        • 2.Sf2#
      • 1...Sg3
        • 2.Sd2#
      • 1...Sa2
        • 2.Bc6#
      • 1...Sd5
        • 2.Sc5#
      • 1...Sa6
        • 2.Bc6#
      • 1...Sc6
        • 2.Bxc6#
      • 1...f3
        • 2.exf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD::B(I),XB(e)
    • B(e);N_GUARD::B(I)
    • S(a);N_GUARD::S(E),XS(a)
    • S(a);N_GUARD::S(E)
    • S(b);N_GUARD::B(I)
    • S(b);N_GUARD,XP(C)::B(I)
    • S(b);CHECK,OGATE::P(C),XS(b)
    • S(b);N_GUARD::B(I),XS(b)
    • P(d);OGATE::P(D),XP(d)
  • Tries
    • Try
      • B(I);
      • Threat
        • B(I)
      • Vars
        • S(a);N_GUARD::S(E),XS(a)
        • S(a);N_GUARD::S(E)
      • Refutation
        • S(b);
  • Actual
    • S(H);
    • Vars
      • S(b);CHECK,OGATE::P(C),XS(b)
      • S(b);N_GUARD,XP(C)::B(I)
      • B(e);SBLOCK::S(H)
      • B(e);N_GUARD::B(I),XB(e)
      • B(e);N_GUARD::B(I)
      • S(a);N_GUARD::S(E),XS(a)
      • S(a);N_GUARD::S(E)
      • S(a);SBLOCK::S(H)
      • S(b);N_GUARD::B(I)
      • S(b);SBLOCK::S(E)
      • S(b);N_GUARD::B(I),XS(b)
      • P(d);OGATE::P(D),XP(d)
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