MESON Chess Problem Database

Problem Display
PID: 245321 (b6b/1R5B/N7/3p4/2Pk4/2p5/2p5/2K1Q3 w - - 0 1)

Onkoud, Abdelaziz

Magyar Sakkelet, 2001

b6b/1R5B/N7/3p4/2Pk4/2p5/2p5/2K1Q3

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Rb4#
    • 1...dxc4
      • 2.Qe4#
  • Tries
    • 1.Rb3?
      • threat
        • 2.Qxc3#
      • 1...Kxc4
        • 2.Rb4#
      • 1...dxc4!
    • 1.Qf2+?
      • 1...Kxc4
        • 2.Rb4#
        • 2.Qc5#
      • 1...Ke5!
    • 1.Qg3?
      • threat
        • 2.Qf4#
      • 1...Kxc4
        • 2.Rb4#
        • 2.Qd3#
      • 1...Be5
        • 2.Qd3#
      • 1...dxc4!
    • 1.Qg1+?
      • 1...Kxc4
        • 2.Rb4#
        • 2.Qc5#
      • 1...Ke5!
    • 1.Qe3+?
      • 1...Kxc4
        • 2.Bd3#
        • 2.Rb4#
        • 2.Qc5#
        • 2.Qd3#
      • 1...Kxe3!
    • 1.c5?
      • threat
        • 2.Rb4#
      • 1...Kc4
        • 2.Rb4#
      • 1...Bxb7!
  • Keys
    • 1.Kxc2!
      • threat
        • 2.Qxc3#
      • 1...Kxc4
        • 2.Rb4#
      • 1...dxc4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P-FLIGHT,XP(C)::R1(E)
    • P(d);N_GUARD,SBLOCK,XP(C)::QAR1(B)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB1(B),XP(b)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(C)::R1(E)
      • Refutation
        • P(d);XP(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • B(f);SBLOCK::QAR1(B)
      • Refutation
        • P(d);XP(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • P(C);
      • Threat
        • R(E)
      • Vars
        • K(c);P-FLIGHT::R1(E)
      • Refutation
        • B(e);XR(E)
  • Actual
    • K(A);P-FLIGHT,XP(a)
    • Threat
      • QAB1(B),XP(b)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(C)::R1(E)
      • P(d);N_GUARD,SBLOCK,XP(C)::QAR1(B)
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