MESON Chess Problem Database

Problem Display
PID: 147168 (8/8/3K4/RN1N1p2/2ppkpp1/5npb/2P3n1/1B3R1Q w - - 0 1)

Riczu, L?

Canadian Chess Chat, 1983

8/8/3K4/RN1N1p2/2ppkpp1/5npb/2P3n1/1B3R1Q

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sge1
      • 2.Rxe1#
    • 1...Se3
      • 2.Sf6#
    • 1...Sgh4
      • 2.Re1#
    • 1...Sfe1
      • 2.Rxf4#
    • 1...Sg1
      • 2.Rxf4#
    • 1...Sd2
      • 2.Rxf4#
    • 1...Sh2
      • 2.Rxf4#
    • 1...Sfh4
      • 2.Rxf4#
    • 1...Se5
      • 2.Rxf4#
    • 1...Sg5
      • 2.Rxf4#
  • Tries
    • 1.Qxg2?
      • threat
        • 2.Re1#
        • 2.Qe2#
      • 1...d3
        • 2.Re1#
      • 1...Bxg2!
  • Keys
    • 1.Ra4!
      • 1...c3
        • 2.Sbxc3#
      • 1...Sge1
        • 2.Rxe1#
      • 1...Se3
        • 2.Sf6#
      • 1...Sgh4
        • 2.Re1#
      • 1...Sfe1
        • 2.Rxf4#
      • 1...Sg1
        • 2.Rxf4#
      • 1...Sd2
        • 2.Rxf4#
      • 1...Sh2
        • 2.Rxf4#
      • 1...Sfh4
        • 2.Rxf4#
      • 1...Se5
        • 2.Rxf4#
      • 1...Sg5
        • 2.Rxf4#
      • 1...d3
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,P_SPINS(b)::R(B),XS(a)
    • S(a);P_SPINS(b),SBLOCK::S(G)
    • S(a);N_GUARD,P_SPINS(b)::R(B)
    • S(b);OGATE,P_SPINS(a)::R1(B),XP(h)
  • Tries
    • Try
      • Q(C);P_PINS(b),XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::R(B)
      • Refutation
        • B(d);N_SPINS(b),XQ(C)
  • Actual
    • R(E);
    • Vars
      • P(e);P_SPINP(f)::S(F),XP(e)
      • S(a);N_GUARD,P_SPINS(b)::R(B),XS(a)
      • S(a);P_SPINS(b),SBLOCK::S(G)
      • S(a);N_GUARD,P_SPINS(b)::R(B)
      • S(b);OGATE,P_SPINS(a)::R1(B),XP(h)
      • P(f);OGATE,P_SPINP(e)::P(D),XP(f)
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Developed and maintained by Brian Stephenson.
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