MESON Chess Problem Database

Problem Display
PID: 44783 (b3K3/4QN2/1p2P3/1B2N3/r2kP1R1/2n5/5P1p/2R4q w - - 0 1)

Fenner, A Jack

8th Comm., BCF 043. Ty., 1942-1943

b3K3/4QN2/1p2P3/1B2N3/r2kP1R1/2n5/5P1p/2R4q

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Sxf3#
    • 1...Qxc1
      • 2.Sf3#
    • 1...Qe1
      • 2.Sf3#
    • 1...Qf1
      • 2.Sf3#
    • 1...Qg1
      • 2.Sf3#
    • 1...Ra1
      • 2.Qb4#
    • 1...Ra2
      • 2.Qb4#
    • 1...Ra3
      • 2.Qb4#
    • 1...Rb4
      • 2.Qxb4#
    • 1...Ra5
      • 2.Qb4#
    • 1...Ra6
      • 2.Qb4#
    • 1...Ra7
      • 2.Qb4#
    • 1...Bc6+
      • 2.Sxc6#
  • Tries
    • 1.Qd6+?
      • 1...Bd5
        • 2.Sc6#
        • 2.Qxb6#
      • 1...Sd5!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qe3#
      • 1...Bc6+
        • 2.Sxc6#
      • 1...Kc5
        • 2.Sc6#
      • 1...Qxe4
        • 2.Sf3#
      • 1...Qxc1
        • 2.Sf3#
      • 1...Bxe4
        • 2.Sc6#
      • 1...Sxe4
        • 2.Qd2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qe1
        • 2.Sf3#
      • 1...Sd1
        • 2.Qd2#
      • 1...Sd5
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::S(F),XQ(a)
    • Q(a);N_GUARD,XR(A)::S(F)
    • Q(a);N_GUARD::S(F)
    • R(d);N_GUARD::QAR2(H)
    • R(d);N_GUARD::QAR2(H),XR(d)
    • B(g);CHECK,N_GUARD::S(F),XB(g)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • B(g);CHECK,N_GUARD::S(F),XB(g)
      • K(e);P_SPINS(c),S_FLIGHT::QAR(H)+S(F)
      • Q(a);N_GUARD,P_SPINQ(a),XP(C)::S(F)
      • Q(a);N_GUARD,XR(A)::S(F)
      • B(g);N_GUARD,P_SPINB(g),XP(C)::S(F)
      • S(c);P_SPINS(c),XP(C)::QAR2(H)
      • Q(a);N_GUARD::S(F),XQ(a)
      • Q(a);N_GUARD::S(F)
      • S(c);::QAR2(H)
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Developed and maintained by Brian Stephenson.
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