MESON Chess Problem Database

Problem Display
PID: 171418 (K7/8/8/nQ6/8/k7/P1p5/2N5 w - - 0 1)

Antipov, Viacheslav Pavlovich

Kudesnik, 1997

K7/8/8/nQ6/8/k7/P1p5/2N5

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sc4
      • 2.Qb3#
    • 1...Sc6
      • 2.Qb3#
    • 1...Sb7
      • 2.Qb3#
  • Tries
    • 1.Ka7?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#
      • 1...Sc6+!
    • 1.Kb8?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#
      • 1...Sc6+!
    • 1.Qb6?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sc6
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#
      • 1...Ka4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qxa5#
      • 1...Kxa2
        • 2.Qb2#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sc6
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#

FEATURES

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