MESON Chess Problem Database

Problem Display
PID: 196255 (3BR1K1/p3N3/2p1N1p1/r3k3/4r3/6PB/8/2Q5 w - - 0 1)

Jankevics, Karlis

Sachova skladba, 2013

3BR1K1/p3N3/2p1N1p1/r3k3/4r3/6PB/8/2Q5

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sxc6#
    • 1...Re1
      • 2.Qf4#
    • 1...Re2
      • 2.Qf4#
    • 1...Rf4
      • 2.Qxf4#
  • Tries
    • 1.Qb2+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Kd6!
    • 1.Qc3+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Kd6!
    • 1.Qc5+?
      • 1...Kf6
        • 2.Sf5#
        • 2.Sxc6#
        • 2.Sc8#
        • 2.Rf8#
      • 1...Rxc5!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sf5#
      • 1...Kd4
        • 2.Sxc6#
      • 1...Kd6
        • 2.Sc8#
      • 1...Kf6
        • 2.Sed5#
      • 1...Rxf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);S_FLIGHT::B(F)+S(E),XP(d)
    • R(a);N_GUARD::QAB1(A)
    • R(a);N_GUARD::QAB1(A),XR(a)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • R(b);XQ(A)
  • Actual
    • S(D);
    • Threat
      • R(G)+S(E)
    • Vars
      • K(c);S_FLIGHT::S(E),XP(d)
      • K(c);S_FLIGHT::S(E)
      • K(c);S_FLIGHT::B(F)+S(E),DCHECK
      • R(a);OGATE,XS(D)::QAB1(A),XR(a)
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