MESON Chess Problem Database

Problem Display
PID: 16305 (8/5K2/1n1B4/Q2P1k2/2p4b/2PqRNpP/4pR2/1B3N2 w - - 0 1)

Eaton, Vincent Lanius

American Chess Bulletin, 1940

8/5K2/1n1B4/Q2P1k2/2p4b/2PqRNpP/4pR2/1B3N2

#2

11 + 7

5088 How to Solve Chess Problems 1945

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Bxc2#
    • 1...Qe4
      • 2.Bxe4#
    • 1...Bg5
      • 2.Sxg3#
      • 2.Sd4#
      • 2.Sh4#
    • 1...Bf6
      • 2.Sxg3#
    • 1...Be7
      • 2.Sxg3#
    • 1...Bd8
      • 2.Sxg3#
    • 1...Sxd5
      • 2.Qxd5#
  • Keys
    • 1.Re4!
      • threat
        • 2.Rf4#
      • 1...Qxd5+
        • 2.Re6#
      • 1...Kxe4
        • 2.S3d2#
      • 1...Qxe4
        • 2.Se3#
      • 1...Qxf3
        • 2.Rg4#
      • 1...Bg5
        • 2.Sxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(b);OGATEB::B(A),XQ(b)
    • Q(b);OGATE::B(A),XQ(b)
    • B(e);N_GUARD::S(B),XP(c)
    • S(g);OGATE,P_SPINS(g),XP(I)::QAR2(H),XS(g)
  • Actual
    • R(E);N_PINQ(b)
    • Threat
      • R1(E)
    • Vars
      • Q(b);CHECK,OGATEB,P_SPINQ(b),XP(I)::B(A)+R(E)
      • K(f);P_SPINQ(b),S_FLIGHT,XR(E)::S(F)
      • Q(b);N_GUARD,P_SPINQ(b),XR(E)::S(B)
      • Q(b);OGATEB,P_SPINQ(b),XS(F)::B(A)+R(E)
      • B(e);N_GUARD::S(B),XP(c)
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