MESON Chess Problem Database

Problem Display
PID: 33029 (Kn6/7Q/3pR3/1prk2P1/3N4/B4N2/1p6/2r4B w - - 0 1)

Lavigerie, SC

De Problemist, 1929

Kn6/7Q/3pR3/1prk2P1/3N4/B4N2/1p6/2r4B

#2

8 + 7

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...R1c4
      • 2.Qe4#
      • 2.Qf5#
    • 1...R5c4
      • 2.Rxd6#
      • 2.Qe4#
      • 2.Qf5#
  • Tries
    • 1.Sd2+?
      • 1...Rxh1
        • 2.Qe4#
      • 1...Kxd4!
    • 1.Se5+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Rxh1!
    • 1.Qg8?
      • threat
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re5#
        • 2.Re7#
        • 2.Re8#
      • 1...Re1
        • 2.Rxe1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re5#
      • 1...Rc7
        • 2.Re5#
        • 2.Re7#
      • 1...Rc8
        • 2.Re5#
        • 2.Re8#
      • 1...Kc4!
    • 1.Qf7?
      • threat
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re5#
        • 2.Re7#
        • 2.Re8#
      • 1...Re1
        • 2.Rxe1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re5#
      • 1...Rc7
        • 2.Re5#
        • 2.Re7#
      • 1...Kc4!
  • Keys
    • 1.Se1+!
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxd4
        • 2.Qd3#

This is a version

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • R(a);XB(A)::QAB1(G)
      • Refutation
        • K(e);P-FLIGHT,XS(D)
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT,XS(D)::QAR1(G)
      • Refutation
        • R(a);XB(A)
    • Try
      • Q(G);
      • Threat
        • DUALS(6)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • DUALS(6)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(C);CHECK
    • Vars
      • K(e);S_FLIGHT::QAB1(G)
      • K(e);P-FLIGHT,XS(D)::QAR1(G)
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