MESON Chess Problem Database

Problem Display
PID: 199336 (1Q6/3pR1N1/rp3pp1/PR1BpPP1/3k4/3p4/1n1P4/2Kn4 w - - 0 1)

Onkoud, Abdelaziz

Freie Presse, 2001

(First published on Fri Jun 1 2001)

1Q6/3pR1N1/rp3pp1/PR1BpPP1/3k4/3p4/1n1P4/2Kn4

#2

10 + 10

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5
      • 2.Qxb6#
    • 1...Ra7
      • 2.Qxb6#
    • 1...Ra8
      • 2.Qxb6#
    • 1...e4
      • 2.Rxe4#
    • 1...fxg5
      • 2.Qxe5#
    • 1...gxf5
      • 2.Sxf5#
    • 1...d6
      • 2.Se6#
  • Tries
    • 1.fxg6?
      • threat
        • 2.Sf5#
      • 1...f5
        • 2.Sxf5#
        • 2.Qxe5#
      • 1...Se3!
    • 1.gxf6?
      • threat
        • 2.Qxe5#
      • 1...e4
        • 2.Rxe4#
        • 2.Qe5#
      • 1...d6
        • 2.Se6#
      • 1...Sc4!
  • Keys
    • 1.Qc7!
      • 1...Rxa5
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc5#
      • 1...fxg5
        • 2.Qxe5#
      • 1...gxf5
        • 2.Sxf5#
      • 1...Sf2
        • 2.Qc3#
      • 1...Ra7
        • 2.Qxb6#
      • 1...Ra8
        • 2.Qxb6#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...e4
        • 2.Rxe4#
      • 1...d6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(f);N_GUARD,XP(C)::QAB(J),XP(g)
    • R(f);N_GUARD::QAB(J),XP(g)
    • P(e);OGATE::R1(H),XP(e)
    • P(h);N_GUARD,XP(G)::QAB1(J),XP(e)
    • P(i);XP(F)::S(I),XP(i)
    • P(j);N_GUARD::S(I)
  • Tries
    • Try
      • P(F);XP(i)
      • Threat
        • S(I)
      • Refutation
        • S(a);
    • Try
      • P(G);XP(h)
      • Threat
        • QAB1(J),XP(e)
      • Vars
        • P(j);N_GUARD::S(I)
      • Refutation
        • S(b);
  • Actual
    • Q(J);
    • Vars
      • R(f);N_GUARD,XP(C)::QAB(J),XP(g)
      • P(g);N_GUARD,XP(C)::QAB1(J)
      • P(h);N_GUARD,XP(G)::QAB1(J),XP(e)
      • P(i);XP(F)::S(I),XP(i)
      • S(a);N_GUARD::QAB1(J)
      • R(f);N_GUARD::QAB(J),XP(g)
      • S(a);N_GUARD::QAB1(J),XS(a)
      • S(b);N_GUARD::QAR1(J)
      • S(b);N_GUARD::QAR1(J),XS(b)
      • P(e);OGATE::R1(H),XP(e)
      • P(j);N_GUARD::S(I)
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