MESON Chess Problem Database

Problem Display
PID: 179697 (3R4/B7/6bQ/2nR1p2/N2Nkn2/1p6/2r1P3/1B3K2 w - - 0 1)

Kopnin, Aleksey Grigorevich

Shakhmaty v SSSR, 1948

3R4/B7/6bQ/2nR1p2/N2Nkn2/1p6/2r1P3/1B3K2

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2
      • 2.Sxc5#
    • 1...Sg2
      • 2.Sc3#
      • 2.Sxc5#
    • 1...Sh3
      • 2.Sc3#
      • 2.Sxc5#
    • 1...Sh5
      • 2.Sc3#
      • 2.Sxc5#
    • 1...Sfe6
      • 2.Sc3#
  • Keys
    • 1.Sf3!
      • threat
        • 2.Re5#
      • 1...Ke3
        • 2.Re5#
      • 1...Sxe2
        • 2.Sd2#
      • 1...Sxd5
        • 2.Sxc5#
      • 1...Sfd3
        • 2.Rd4#
      • 1...Scd3
        • 2.Sg5#
      • 1...Sd7
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(d);XP(C)::S(D),XS(e)
    • S(d);::S(D)
  • Actual
    • S(E);
    • Threat
      • R1(F)
    • Vars
      • K(c);N_SPINR(a),P-FLIGHT,P_SPINS(d)::R(F)
      • S(d);XP(C)::S(E)
      • S(d);XR(F)::S(D),XS(e)
      • S(d);N_SPINR(a)::R1(F)
      • S(e);N_SPINR(a)::S(E)
      • S(e);::S(D)
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