MESON Chess Problem Database

Problem Display
PID: 135056 (8/2NBpK2/8/2pRp3/Q1q1k3/1n1b1p1P/2p1rp1B/2r1nN2 w - - 0 1)

Handloser, Ralf Chris

Probleemblad, 2009

8/2NBpK2/8/2pRp3/Q1q1k3/1n1b1p1P/2p1rp1B/2r1nN2

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rxe5#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Bf5#
      • 1...Sd4
        • 2.Rxe5#
      • 1...e6!
    • 1.Sb5?
      • threat
        • 2.Sc3#
      • 1...Kxd5
        • 2.Qa8#
      • 1...e6
        • 2.Rxe5#
      • 1...Sd4!
    • 1.Qxc4+?
      • 1...Sd4
        • 2.Rxe5#
      • 1...Bxc4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rxe5#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kf5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(i);N_PINR(E)::R1(E),XP(l)
  • Tries
    • Try
      • K(H);N_SPINR(E),S_FLIGHT
      • Threat
        • B(G)
      • Vars
        • S(f);N_SPINQ(i),SBLOCK::R1(E),XP(l)
      • Refutation
        • P(m);
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(j);N_SPINQ(i),OGATEB,S_FLIGHT,XR(E)::QAB(D)
        • P(m);N_PINR(E)::R1(E),XP(l)
      • Refutation
        • S(f);N_SPINQ(i)
    • Try
      • Q(D);CHECK,N_SPINR(E),XQ(i)
      • Vars
        • S(f);P_SPINS(f)::R1(E),XP(l)
      • Refutation
        • B(g);P_PINR(E),XQ(D)
  • Actual
    • S(F);N_SPINR(E)
    • Threat
      • R1(E),XP(l)
    • Vars
      • K(j);N_SPINQ(i),OGATEB,S_FLIGHT,XR(E)::QAB1(D)
      • K(j);N_SPINQ(i),P_SPINP(l),S_FLIGHT::S(A)
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