MESON Chess Problem Database

Problem Display
PID: 172269 (8/8/8/7p/5Q2/7k/7N/3n3K w - - 0 1)

Andreev, Aleksandr Grigorevich

Twoja sudba, 1996

8/8/8/7p/5Q2/7k/7N/3n3K

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...h4
      • 2.Qf3#
      • 2.Qg4#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Qg3#
      • 1...h4
        • 2.Qf3#
        • 2.Qf5#
      • 1...Sf2+!
    • 1.Sf3?
      • threat
        • 2.Sg1#
        • 2.Sg5#
        • 2.Qh4#
      • 1...h4
        • 2.Sg1#
        • 2.Sg5#
        • 2.Qxh4#
      • 1...Sf2+!
  • Keys
    • 1.Sg4!
      • 1...Sf2+
        • 2.Sxf2#
      • 1...Kh4
        • 2.Sf2#
      • 1...hxg4
        • 2.Qh2#
      • 1...Sb2
        • 2.Sf2#
      • 1...Sc3
        • 2.Sf2#
      • 1...Se3
        • 2.Sf2#
      • 1...h4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Refutation
        • S(a);CHECK
    • Try
      • S(B);
      • Threat
        • DUALS(3)
      • Refutation
        • S(a);CHECK
  • Actual
    • S(B);
    • Vars
      • S(a);CHECK,N_GUARD::S(B),XS(a)
      • K(b);P-FLIGHT::QAR(C)+S(B)
      • P(c);SBLOCK,XS(B)::QAR1(C)
      • S(a);N_GUARD::S(B)
      • P(c);SBLOCK::QAR2(C)
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