MESON Chess Problem Database

Problem Display
PID: 104536 (8/3r1p2/5P1R/BP2k3/1N4B1/Qp2P3/1KPN4/3R3b w - - 0 1)

Papic, Ljubisa

Rjazansky komsomolets, 1982

8/3r1p2/5P1R/BP2k3/1N4B1/Qp2P3/1KPN4/3R3b

#2

12 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sc6#
    • 1...Rc7
      • 2.Bxc7#
    • 1...Be4
      • 2.Sc4#
    • 1...Bd5
      • 2.Sd3#
  • Tries
    • 1.Sd3+?
      • 1...Kd5
        • 2.Rh5#
        • 2.Qc5#
        • 2.c4#
      • 1...Rxd3!
    • 1.Sc6+?
      • 1...Kd5
        • 2.Rh5#
        • 2.c4#
      • 1...Bxc6!
    • 1.Rh5+?
      • 1...Kd6
        • 2.Sf3#
        • 2.Sc4#
        • 2.Se4#
        • 2.Sa2#
        • 2.Sd3#
        • 2.Sd5#
        • 2.Sa6#
        • 2.Sc6#
      • 1...Kxf6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rh5#
      • 1...Kxd5
        • 2.Rh5#
      • 1...Rxd5
        • 2.Qe7#
      • 1...Bxd5
        • 2.Bc3#
      • 1...Be4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(d);SBLOCK,S_CUTB(a)::S(G)
    • R(d);N_GUARD::B(I),XR(d)
    • B(a);SBLOCK::S(D)
    • B(a);SBLOCK,S_CUTR(d)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • R(d);XS(G)
    • Try
      • S(G);CHECK
      • Refutation
        • B(a);XS(G)
    • Try
      • R(L);CHECK
      • Refutation
        • K(c);S_FLIGHT,XP(K)
  • Actual
    • S(G);
    • Threat
      • R(L)
    • Vars
      • K(c);P-FLIGHT,XS(G)::R(L)
      • R(d);N_GUARD,SBLOCK,XS(G)::QAR2(E)
      • B(a);SBLOCK,XS(G)::B(I)
      • B(a);SBLOCK::S(D)
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