MESON Chess Problem Database

Problem Display
PID: 162337 (8/N3Q3/2B1p3/1P2kp2/2Pn1p2/5P2/3KPR1N/BR6 w - - 0 1)

Alekseev, Yuri Mikhailovich

Source?, 1981

8/N3Q3/2B1p3/1P2kp2/2Pn1p2/5P2/3KPR1N/BR6

#2

12 + 5

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Rb2?
      • 1...Sb3+
        • 2.Rxb3#
      • 1...Sxf3+
        • 2.Sxf3#
      • 1...Sxb5
        • 2.Rxb5#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Sc2
        • 2.Rxc2#
      • 1...Sxe2!
  • Keys
    • 1.Kc3!
      • 1...Sxe2+
        • 2.Rxe2#
      • 1...Sxb5+
        • 2.Rxb5#
      • 1...Sxf3
        • 2.Sxf3#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Sc2
        • 2.Kxc2#
      • 1...Sb3
        • 2.Kxb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);N_PINS(a)
      • Vars
        • S(a);CHECK,OGATEB::B(A)+R(B),XS(a)
        • S(a);CHECK,XP(G)::S(F),XS(a)
        • S(a);OGATE,XP(I)::B(A)+R(B),DCHECK,XS(a)
        • S(a);XB(J)::S(K),XS(a)
        • S(a);OGATEB::B(A)+R(B),XS(a)
      • Refutation
        • S(a);XP(D)
  • Actual
    • K(C);N_PINS(a),S_FLIGHT
    • Vars
      • S(a);CHECK,OGATE,XP(D)::R(E),XS(a)
      • S(a);CHECK,OGATE,XP(I)::R(B),XS(a)
      • S(a);XP(G)::S(F),XS(a)
      • S(a);XB(J)::S(K),XS(a)
      • S(a);::B(A)+K(C),XS(a)
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