MESON Chess Problem Database

Problem Display
PID: 87830 (nR3B1K/3k1p1p/N4R1Q/2p5/p7/2N3p1/bnqr4/b2r4 w - - 0 1)

Svyatov, Gennadi

Buletin Problemistic, 1973

nR3B1K/3k1p1p/N4R1Q/2p5/p7/2N3p1/bnqr4/b2r4

#2

7 + 13

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Rxf7#
    • 1...Bb1
      • 2.Rxf7#
    • 1...Bd5
      • 2.Rd6#
    • 1...Sd3
      • 2.Rd6#
    • 1...Sc4
      • 2.Rxf7#
    • 1...Sc7
      • 2.Sxc5#
    • 1...c4
      • 2.Rxf7#
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rd6#
        • 2.Rxf7#
      • 1...Rxd5
        • 2.Rxf7#
      • 1...Bxd5
        • 2.Rd6#
      • 1...Qe4
        • 2.Sxc5#
        • 2.Rd6#
      • 1...Qf5
        • 2.Sxc5#
        • 2.Rd6#
      • 1...Qg6
        • 2.Sxc5#
      • 1...Qc3
        • 2.Qh3#
      • 1...Re1
        • 2.Rd6#
      • 1...Rf1
        • 2.Rd6#
      • 1...Re2
        • 2.Rd6#
      • 1...Rf2
        • 2.Rd6#
      • 1...Sd3
        • 2.Qh3#
      • 1...Sc4
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • R(f);S_CUTB(c)::R(C),XP(k)
    • B(c);N_GUARD::R(C),XP(k)
    • B(c);S_CUTR(f)::R1(C)
    • S(d);S_CUTR(f)::R1(C)
    • S(d);S_CUTB(c)::R(C),XP(k)
    • S(m);SBLOCK::S(B),XP(i)
    • P(i);S_CUTB(c)::R(C),XP(k)
  • Actual
    • S(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(f);XS(A)::R(C),XP(k)
      • B(c);XS(A)::R1(C)
      • Q(e);N_GUARD::S(B),XP(i)
      • Q(e);N_GUARD,P_PINR(C)::QAB(D)
      • R(b);::R1(C)
      • R(f);::R1(C)
      • S(d);P_PINR(C),S_CUTQ(e)::QAB(D)
      • S(d);P_PINR(C),S_CUTQ(e)::S(B),XP(i)
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