MESON Chess Problem Database

Problem Display
PID: 153156 (3N4/p7/p4N2/P1k2K2/1n6/3PP3/n2Q4/1R1B4 w - - 0 1)

Nikolic, Zoran

StrateGems, 2011

3N4/p7/p4N2/P1k2K2/1n6/3PP3/n2Q4/1R1B4

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qxb4#
    • 1...Sd5
      • 2.Se4#
    • 1...Sc6
      • 2.Sb7#
  • Tries
    • 1.Se4+?
      • 1...Kd5
        • 2.Bb3#
      • 1...Kb5!
    • 1.Qc3+?
      • 1...Kb5
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Sxc3!
  • Keys
    • 1.Qb2!
      • 1...Kb5
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Sxd3
        • 2.Qd4#
      • 1...Sc1
        • 2.Qxb4#
      • 1...Sc3
        • 2.Qxb4#
      • 1...Sc2
        • 2.Qe5#
      • 1...Sd5
        • 2.Se4#
      • 1...Sc6
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(C),XS(b)
    • S(b);SBLOCK::S(H)
    • S(b);SBLOCK::S(I)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);P-FLIGHT::B(B)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(b)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(b)::QAR(C)
        • K(c);S_FLIGHT::QAB1(C)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b)::QAR(C)
      • K(c);S_FLIGHT::QAB1(C)
      • S(b);XP(D)::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(b)
      • S(b);N_GUARD::QAR2(C)
      • S(b);SBLOCK::S(H)
      • S(b);SBLOCK::S(I)
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