MESON Chess Problem Database

Problem Display
PID: 103899 (8/B2p4/K3p2p/RN5Q/4kN1p/2P1P2r/2PrP2q/5b2 w - - 0 1)

Lukyanov, Valentin Volodimirovich

Solidarity Ty., 1972

8/B2p4/K3p2p/RN5Q/4kN1p/2P1P2r/2PrP2q/5b2

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Sd6#
      • 2.Ra4#
    • 1...Rxe2
      • 2.Sd6#
      • 2.Ra4#
    • 1...Rd3
      • 2.cxd3#
    • 1...Rd6+
      • 2.Sxd6#
    • 1...Rf3
      • 2.exf3#
    • 1...e5
      • 2.Qg6#
    • 1...d5
      • 2.Sd6#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Ra4#
      • 1...Qd6+
        • 2.Sxd6#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Qe5
        • 2.Qxe5#
      • 1...e5
        • 2.Sd6#
      • 1...Qc7
        • 2.Sf2#
      • 1...d5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(b);OGATE::P(A),XR(b)
    • R(b);CHECK,N_GUARD::S(G),XR(b)
    • R(d);OGATE::P(B),XR(d)
    • P(g);SBLOCK::QAB(H)
    • P(i);S_CUTR(b)::S(G)
  • Actual
    • S(E);
    • Threat
      • R(F)
    • Vars
      • Q(c);CHECK,N_GUARD::S(G),XQ(c)
      • R(b);OGATE,XS(E)::P(A),XR(b)
      • Q(c);N_GUARD::QAR1(H),XQ(c)
      • P(g);S_CUTQ(c)::S(G)
      • Q(c);N_GUARD::S(E)
      • P(i);SBLOCK::QAB(H)
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