MESON Chess Problem Database

Problem Display
PID: 166969 (4R1NQ/2p2B1n/3pr1p1/2P2pn1/2P1k3/3N2b1/1P2K1P1/2B5 w - - 0 1)

Nikolichev, Aleksandr

Sachmatija, 2010

4R1NQ/2p2B1n/3pr1p1/2P2pn1/2P1k3/3N2b1/1P2K1P1/2B5

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Bd5#
    • 1...Rxe8
      • 2.Bd5#
    • 1...Bf2
      • 2.Sxf2#
    • 1...Bh2
      • 2.Sf2#
    • 1...Bf4
      • 2.Sf2#
    • 1...Sf3
      • 2.gxf3#
    • 1...f4
      • 2.Bxg6#
    • 1...dxc5
      • 2.Sxc5#
  • Keys
    • 1.Be3!
      • threat
        • 2.Qd4#
      • 1...dxc5
        • 2.Sxc5#
      • 1...f4
        • 2.Bxg6#
      • 1...Re5
        • 2.Bd5#
      • 1...Be5
        • 2.Sf2#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(f);OGATE::B(H)
    • R(f);N_SPINR(f),OGATE,XR(I)::B(H)
    • B(a);N_GUARD::S(E),XB(a)
    • B(a);N_GUARD::S(E)
    • S(d);OGATE::P(D),XS(d)
    • P(c);OGATEB::B(H),XP(g)
    • P(e);XP(G)::S(E),XP(e)
  • Actual
    • B(A);
    • Threat
      • QAR1(K)
    • Vars
      • P(e);XP(G)::S(E),XP(e)
      • P(c);OGATEB::B(H),XP(g)
      • R(f);OGATE::B(H)
      • B(a);N_GUARD,N_SPINR(f)::S(E)
      • S(d);OGATE::P(D),XS(d)
      • S(i);N_GUARD::S(J),XS(i)
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