MESON Chess Problem Database

Problem Display
PID: 171381 (8/8/8/8/8/2Q5/4p1p1/3kBnK1 w - - 0 1)

Antipov, Viacheslav Pavlovich

Temp-64 (Nikolaev), 1995

8/8/8/8/8/2Q5/4p1p1/3kBnK1

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sh2
      • 2.Qd2#
    • 1...Se3
      • 2.Qd2#
    • 1...Sg3
      • 2.Qd2#
  • Tries
    • 1.Kxg2?
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sh2
        • 2.Qd2#
      • 1...Sg3
        • 2.Qd2#
      • 1...Se3+!
    • 1.Qc2+?
      • 1...Kxe1
        • 2.Qc1#
      • 1...Kxc2!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qb1#
      • 1...Kxe1
        • 2.Qc1#
      • 1...Sd2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAR1(C),XS(b)
    • S(b);N_GUARD::QAR1(C)
  • Tries
    • Try
      • K(B);P-FLIGHT,XP(d)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(b);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(A)::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(a);P-FLIGHT,XB(A)::QAR2(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
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