MESON Chess Problem Database

Problem Display
PID: 150030 (8/5K2/Q2p4/1PRrkp2/RB1N3P/1Pp3p1/2N1P1B1/8 w - - 0 1)

Albarda, Johannes

Probleemblad, 1978

8/5K2/Q2p4/1PRrkp2/RB1N3P/1Pp3p1/2N1P1B1/8

#2

12 + 6

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Rxd5#
  • Tries
    • 1.e3?
      • threat
        • 2.Sc6#
        • 2.Rxd5#
      • 1...dxc5
        • 2.Qe6#
        • 2.Qf6#
      • 1...f4
        • 2.Rxd5#
      • 1...Rxc5!
  • Keys
    • 1.Bxc3!
      • threat
        • 2.Sf3#
        • 2.Sc6#
        • 2.Se6#
      • 1...Kf4
        • 2.Se6#
      • 1...Rxc5
        • 2.Sc6#
      • 1...dxc5
        • 2.Sf3#
      • 1...f4
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::R1(J),XR(c)
  • Tries
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::R1(J),XR(c)
      • Refutation
        • R(c);N_SPINR(c),XR(J)
  • Actual
    • B(F);XP(a)
    • Threat
      • DUALS(3)
    • Vars
      • K(d);N_SPINR(c),S_FLIGHT::R(E)+S(G),DCHECK
      • R(c);N_SPINR(c),XR(J)::B(F)+S(G),DCHECK
      • P(f);N_SPINR(c),XR(J)::B(F)+S(G),DCHECK
      • P(e);SBLOCK::R1(J),XR(c)
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