MESON Chess Problem Database

Problem Display
PID: 166502 (8/p1n5/Pk1p4/8/KN1n4/p1R5/Q7/3r4 w - - 0 1)

Novitski, Petr Adrinovich

Sachove umeni (Ceskoslovensky sach), 2016

8/p1n5/Pk1p4/8/KN1n4/p1R5/Q7/3r4

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Rc6#
    • 1...Se2
      • 2.Rc6#
    • 1...Sb3
      • 2.Rc6#
    • 1...Sf3
      • 2.Rc6#
    • 1...Sdb5
      • 2.Rc6#
    • 1...Sf5
      • 2.Rc6#
    • 1...Sc6
      • 2.Rxc6#
    • 1...Sde6
      • 2.Rc6#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qxc7#
      • 1...Sxa6
        • 2.Qxa6#
      • 1...Sdb5
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sde6
        • 2.Qc6#
      • 1...Sd5
        • 2.Sxd5#
      • 1...Sce6
        • 2.Sd5#
      • 1...Sa8
        • 2.Sd5#
      • 1...Se8
        • 2.Sd5#
      • 1...Scb5!
    • 1.Qf2?
      • threat
        • 2.Rc6#
      • 1...Rc1
        • 2.Qxd4#
      • 1...Sxa6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxc7#
      • 1...Sxa6
        • 2.Sd5#
      • 1...Sdb5
        • 2.Rc6#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Sde6
        • 2.Rc6#
      • 1...Scb5
        • 2.Qb7#
      • 1...Sd5
        • 2.Qb7#
      • 1...Sce6
        • 2.Qb7#
      • 1...Sa8
        • 2.Qb7#
      • 1...Se8
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • S(c);N_GUARD::R1(B)
    • S(c);N_GUARD::R1(B),XS(c)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XS(g)
      • Vars
        • S(g);OGATE,XP(E)::QAR1(A),XS(g)
        • S(c);N_GUARD::QAR1(A)
        • S(c);N_GUARD::QAR1(A),XS(c)
        • S(g);N_GUARD::S(D),XS(g)
        • S(g);N_GUARD::S(D)
      • Refutation
        • S(g);
    • Try
      • Q(A);P_PINS(c)
      • Threat
        • R1(B)
      • Vars
        • R(a);N_GUARD::QAB(A),XS(c)
      • Refutation
        • S(g);XP(E)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XS(g)
    • Vars
      • S(g);N_GUARD,SBLOCK,XP(E)::S(D)
      • S(c);N_GUARD::R1(B)
      • S(c);N_GUARD::R1(B),XS(c)
      • S(g);OGATE::QAR1(A)
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