MESON Chess Problem Database

Problem Display
PID: 119768 (8/p2N4/4n3/k3n3/p2N4/p2P4/1P6/2QK4 w - - 0 1)

Mikan, Ilja

Springaren, 1959

8/p2N4/4n3/k3n3/p2N4/p2P4/1P6/2QK4

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qd2#
      • 2.Qc3#
    • 1...a6
      • 2.Qd2#
      • 2.Qc3#
  • Tries
    • 1.Qc5+?
      • 1...Ka6
        • 2.Qb5#
      • 1...Sxc5!
    • 1.Qc7+?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Sb8#
      • 1...Sxc7!
  • Keys
    • 1.b4+!
      • 1...Kxb4
        • 2.Qd2#
      • 1...Ka6
        • 2.Qc8#
      • 1...axb4 ep
        • 2.Qxa3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • S(e);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • K(c);P-FLIGHT::S(F)
      • Refutation
        • S(e);XQ(A)
  • Actual
    • P(C);CHECK
    • Vars
      • K(c);S_FLIGHT,XP(C)::QAB(A)
      • K(c);P-FLIGHT::QAB(A)
      • P(b);EP,XP(C)::QAR2(A),XP(a)
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