MESON Chess Problem Database

Problem Display
PID: 11327 (1R2N3/5p2/7b/p1kB1nnR/r3p2B/PP4N1/2pQ4/2K5 w - - 0 1)

Cox, C

Chess, 1938

1R2N3/5p2/7b/p1kB1nnR/r3p2B/PP4N1/2pQ4/2K5

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxa5#
  • Tries
    • 1.Qc3+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...Kxd5!
  • Keys
    • 1.Ba8!
      • threat
        • 2.Qd5#
      • 1...Rd4
        • 2.Qxa5#
      • 1...Se3
        • 2.Qd6#
      • 1...Sd4
        • 2.Sxe4#
      • 1...Se7
        • 2.Qd6#
      • 1...Sf3
        • 2.Be7#
      • 1...Sh3
        • 2.Be7#
        • 2.Rxf5#
      • 1...Se6
        • 2.Be7#
        • 2.Rxf5#
      • 1...Sh7
        • 2.Be7#
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,SBLOCK::QAR2(B),XP(d)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(B),XR(b)
      • Refutation
        • K(e);P-FLIGHT,XB(G)
  • Actual
    • B(G);
    • Threat
      • QAR1(B)
    • Vars
      • R(b);N_GUARD,SBLOCK::QAR2(B),XP(d)
      • S(f);N_GUARD,P_SPINS(g)::QAB1(B)
      • S(f);P_SPINS(g),S_CUTR(b)::S(E),XP(c)
      • S(g);OGATE,P_PINQ(B),P_SPINS(f)::B(F)
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