MESON Chess Problem Database

Problem Display
PID: 245284 (8/3b1p2/7K/BpQ3np/1n5b/1PNk3r/q2pp2r/1NRR1B2 w - - 0 1)

Onkoud, Abdelaziz

Hlas l'udu, 1994

8/3b1p2/7K/BpQ3np/1n5b/1PNk3r/q2pp2r/1NRR1B2

#2

9 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Rxd2#
    • 1...Qa1
      • 2.Rxd2#
    • 1...Qa3
      • 2.Rxd2#
    • 1...Qa4
      • 2.Rxd2#
    • 1...Qxa5
      • 2.Rxd2#
    • 1...Rh1
      • 2.Bxe2#
    • 1...Bf2
      • 2.Bxe2#
    • 1...Sc2
      • 2.Rxd2#
  • Tries
    • 1.Qf5+?
      • 1...Ke3
        • 2.Bb6#
      • 1...Kd4
        • 2.Bb6#
      • 1...Se4
        • 2.Qxe4#
      • 1...Bxf5!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Qd4#
      • 1...Bf2
        • 2.Bxe2#
      • 1...Sc2
        • 2.Rxd2#
      • 1...Sc6
        • 2.Qxb5#
      • 1...Sf3
        • 2.Qe3#
      • 1...Se6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD,XP(E)::R1(C),XP(b)
    • Q(a);N_GUARD::R1(C),XP(b)
    • Q(a);N_GUARD,XB(G)::R1(C),XP(b)
    • R(d);N_GUARD::B(D),XP(c)
    • B(h);S_CUTR(d)::B(D),XP(c)
    • S(g);S_CUTQ(a)::R1(C),XP(b)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);N_SPINP(b),P-FLIGHT::B(G)
        • K(e);P-FLIGHT::B(G)
        • S(j);N_GUARD,P_SPINS(j)::QAB1(H),XS(j)
      • Refutation
        • B(l);XQ(H)
  • Actual
    • B(G);
    • Threat
      • QAR1(H)
    • Vars
      • B(h);S_CUTR(d)::B(D),XP(c)
      • S(g);S_CUTQ(a)::R1(C),XP(b)
      • S(g);S_CUTB(l)::QAB(H),XP(i)
      • S(j);S_CUTR(f)::QAR1(H)
      • S(j);N_GUARD,S_CUTB(l)::QAB(H)
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