MESON Chess Problem Database

Problem Display
PID: 172282 (8/8/8/8/3B1K2/8/n1pkN3/5Q2 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/8/8/8/3B1K2/8/n1pkN3/5Q2

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sg1?
      • threat
        • 2.Sf3#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1B
        • 2.Qe2#
      • 1...c1R
        • 2.Qe2#
      • 1...c1S!
    • 1.Sg3?
      • threat
        • 2.Se4#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1B
        • 2.Qe2#
      • 1...c1R
        • 2.Qe2#
      • 1...Sc3
        • 2.Be3#
      • 1...c1S!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Se4#
      • 1...Sxc3
        • 2.Be3#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1S
        • 2.Qd1#
      • 1...c1B
        • 2.Qe2#
        • 2.Qd1#
      • 1...c1R
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • P(b);SBLOCK::QAR1(A)
        • S(a);SBLOCK::B(C)
      • Refutation
        • P(b);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • S(a);SBLOCK,XS(B)::B(C)
      • P(b);SBLOCK::QAR1(A)
      • P(b);N_GUARD::QAR1(A)
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