MESON Chess Problem Database

Problem Display
PID: 53387 (8/1Kp1NNr1/1BP5/4n1r1/1Q1nk3/2R1ppP1/2p5/3q4 w - - 0 1)

Couture, William J

Chess Life, 1955

8/1Kp1NNr1/1BP5/4n1r1/1Q1nk3/2R1ppP1/2p5/3q4

#2

8 + 10

98 Manchester Guardian 1959
3713 Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Qxd4#
    • 1...Qa1
      • 2.Qxd4#
    • 1...Qb1
      • 2.Qxd4#
    • 1...Qc1
      • 2.Qxd4#
    • 1...Qe1
      • 2.Qxd4#
    • 1...Qf1
      • 2.Qxd4#
    • 1...Qg1
      • 2.Qxd4#
    • 1...Qh1
      • 2.Qxd4#
    • 1...Rh7
      • 2.Sxg5#
    • 1...Sd3
      • 2.Qxd4#
    • 1...cxb6
      • 2.Sd6#
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qd5#
      • 1...Rxg3
        • 2.Qxe5#
      • 1...Sdxc6
        • 2.Rxe3#
      • 1...Sexc6
        • 2.Qf4#
      • 1...Sxf7
        • 2.Qf4#
      • 1...cxd6
        • 2.Sxd6#
      • 1...Se2
        • 2.Rxe3#
      • 1...Sb3
        • 2.Rxe3#
      • 1...Sb5
        • 2.Rxe3#
      • 1...Sf5
        • 2.Qxe5#
      • 1...Se6
        • 2.Rxe3#
      • 1...Sd3
        • 2.Qxd4#
      • 1...Sc4
        • 2.Qf4#
      • 1...Sg4
        • 2.Qf4#
      • 1...Sg6
        • 2.Sxg5#
      • 1...Sd7
        • 2.Qf4#

Anticipated by 11569(1939)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 10
  • Sets
    • Q(a);N_GUARD::QAR1(C),XS(e)
    • R(j);N_GUARD::S(H),XR(h)
    • S(g);S_CUTQ(a)::QAR1(C),XS(e)
    • P(i);N_GUARD,XB(D)::S(H)
  • Actual
    • Q(C);N_PINS(e)
    • Threat
      • QAB1(C)
    • Vars
      • R(h);N_GUARD,XP(B)::QAR1(C),XS(g)
      • S(e);XP(E)::R1(A),XP(c)
      • S(g);OGATE,XP(E)::QAR1(C)
      • S(g);OGATE,XS(H)::QAR1(C)
      • P(i);XQ(C)::S(H),XP(i)
      • S(e);::R1(A),XP(c)
      • S(e);S_CUTR(h)::QAR1(C),XS(g)
      • S(g);S_CUTQ(a)::QAR1(C),XS(e)
      • S(g);OGATE::QAR1(C)
      • S(g);S_CUTR(j)::S(H),XR(h)
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