MESON Chess Problem Database

Problem Display
PID: 196281 (B7/6n1/2r2pK1/Q2N2p1/P3krNR/q3P3/4P3/7n w - - 0 1)

Gamage, Frederick

White, Alain Campbell

The Observer, 1943

(First published on Sun Mar 14 1943)

B7/6n1/2r2pK1/Q2N2p1/P3krNR/q3P3/4P3/7n

#2

9 + 8

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sc3#
    • 1...Qe7
      • 2.Sc3#
    • 1...Qf8
      • 2.Sc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qxa4
      • 2.Sc3#
    • 1...Rc1
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Rc2
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Rc3
      • 2.Sxc3#
      • 2.Sdxf6#
    • 1...Rc4
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Rc5
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Ra6
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Rb6
      • 2.Sc3#
      • 2.Sxb6#
      • 2.Sdxf6#
    • 1...Rd6
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Re6
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Rc7
      • 2.Sc3#
      • 2.Sdxf6#
      • 2.Sxc7#
    • 1...Rc8
      • 2.Sc3#
      • 2.Sdxf6#
    • 1...Sf5
      • 2.Sdxf6#
    • 1...f5+
      • 2.Sdf6#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qd4#
      • 1...f5+
        • 2.Sdf6#
      • 1...Kxd5
        • 2.Qxc6#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...Qxa4
        • 2.Qd3#
      • 1...Rxc3
        • 2.Sxc3#
        • 2.Sdxf6#
      • 1...Qc5
        • 2.Qd3#
      • 1...Qb2
        • 2.Qd3#
      • 1...Qb4
        • 2.Qd3#
      • 1...Qa1
        • 2.Qd3#
      • 1...Rc4
        • 2.Sgxf6#
        • 2.Sdxf6#
        • 2.Qxc4#
      • 1...Sf5
        • 2.Sdxf6#
      • 1...Se6
        • 2.Sgxf6#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::S(G)
    • Q(b);N_GUARD::S(G),XQ(b)
    • Q(b);N_GUARD,XP(C)::S(G)
    • S(h);S_CUTR(d)::S(G),XP(g)
    • P(g);CHECK,S_CUTR(d)::S(G)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • P(g);CHECK,S_CUTR(d)::S(G)
      • K(c);OGATEB,P_SPINR(f),S_FLIGHT,XS(G)::QAB1(F),XR(f)
      • Q(b);XQ(F)::S(G),XQ(b)
      • Q(b);N_GUARD,XP(C)::QAB1(F)
      • Q(b);N_GUARD::QAB1(F)
      • S(h);S_CUTR(d)::S(G),XP(g)
      • S(h);S_CUTR(f)::S(D),XP(g)
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