MESON Chess Problem Database

Problem Display
PID: 245301 (8/5Rp1/1p1P2P1/1BkP3p/2P1P2B/6K1/3N4/Q7 w - - 0 1)

Onkoud, Abdelaziz

Thema Danicum, 1997

8/5Rp1/1p1P2P1/1BkP3p/2P1P2B/6K1/3N4/Q7

#2

11 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kf4?
      • 1...Kxd6
        • 2.Qa3#
      • 1...Kb4!
    • 1.Sb1?
      • 1...Kb4
        • 2.Qa3#
      • 1...Kxd6!
    • 1.Sb3+?
      • 1...Kxd6
        • 2.Rd7#
        • 2.e5#
      • 1...Kb4!
    • 1.Sf3?
      • threat
        • 2.Qa3#
      • 1...Kxd6
        • 2.Qa3#
      • 1...Kb4!
    • 1.Be7?
      • threat
        • 2.d7#
      • 1...Kb4
        • 2.d7#
      • 1...h4+!
    • 1.Rf3?
      • 1...Kb4
        • 2.Qa3#
      • 1...Kxd6!
    • 1.Rb7?
      • 1...Kxd6
        • 2.Be7#
      • 1...Kb4!
    • 1.Re7?
      • 1...Kxd6
        • 2.Qa3#
      • 1...Kb4!
    • 1.d7?
      • threat
        • 2.Be7#
      • 1...Kb4
        • 2.Be7#
      • 1...Kd6!
  • Keys
    • 1.Ra7!
      • 1...Kb4
        • 2.Qa3#
      • 1...Kxd6
        • 2.Be7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT,XP(I)::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(I)
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAB(A)
      • Vars
        • K(a);S_FLIGHT,XP(I)::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Threat
        • B(F)+P(I)
      • Vars
        • K(a);S_FLIGHT::B(F)+P(I)
      • Refutation
        • P(b);CHECK
    • Try
      • R(K);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(I)
    • Try
      • R(K);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(I)::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(K);
      • Vars
        • K(a);S_FLIGHT,XP(I)::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(I);
      • Threat
        • B(F)
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(K);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);OGATEB,S_FLIGHT,XP(I)::B(F)
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