MESON Chess Problem Database

Problem Display
PID: 172266 (8/8/8/8/p1Q5/1n6/3pN3/3k1K2 w - - 0 1)

Andreev, Aleksandr Grigorevich

Twoja sudba, 1996

8/8/8/8/p1Q5/1n6/3pN3/3k1K2

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...a3
      • 2.Qxb3#
  • Tries
    • 1.Qe4?
      • 1...Sa1
        • 2.Qb1#
      • 1...Sc1
        • 2.Sc3#
      • 1...Sd4
        • 2.Qb1#
      • 1...Sa5
        • 2.Qb1#
      • 1...Sc5
        • 2.Qb1#
      • 1...a3!
  • Keys
    • 1.Qd3!
      • 1...Sa1
        • 2.Qb1#
      • 1...Sc1
        • 2.Sc3#
      • 1...Sd4
        • 2.Qb1#
      • 1...Sa5
        • 2.Qb1#
      • 1...Sc5
        • 2.Qb1#
      • 1...a3
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(d);N_GUARD::QAB(C),XS(c)
  • Tries
    • Try
      • Q(C);
      • Vars
        • S(c);N_GUARD::QAR2(C)
        • S(c);SBLOCK::S(B)
      • Refutation
        • P(d);
  • Actual
    • Q(C);P_PINP(b)
    • Vars
      • S(c);N_GUARD::QAR2(C)
      • S(c);SBLOCK::S(B)
      • P(d);N_GUARD::QAB(C),XS(c)
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