MESON Chess Problem Database

Problem Display
PID: 148060 (2q1N1r1/B1p3PB/1b1PPRRn/r2P4/pP2k2P/K1Q3P1/2b2p2/8 w - - 0 1)

Clark, WA

Brighton Society, 1895

(First published on Sat Apr 27 1895)

2q1N1r1/B1p3PB/1b1PPRRn/r2P4/pP2k2P/K1Q3P1/2b2p2/8

#2

14 + 10

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Rf4#
      • 2.Rg4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Sg4
      • 2.Rg5#
    • 1...Sf7
      • 2.Rg5#
  • Keys
    • 1.Rf5!
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Rg5#
      • 1...Qxe6
        • 2.Rxe6#
      • 1...Rxd5
        • 2.Rf4#
      • 1...Sxf5
        • 2.Sf6#
      • 1...cxd6
        • 2.Sxd6#
      • 1...Bd3
        • 2.Qe5#
      • 1...Be3
        • 2.Qxc2#
      • 1...Bd4
        • 2.Qf3#
      • 1...Sg4
        • 2.Rxg4#
      • 1...Sf7
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::QAR1(B),XB(f)
    • S(g);N_GUARD::B(M)+R(J)
  • Actual
    • R(I);
    • Threat
      • R1(I)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(I)::B(M)+R(J),DCHECK
      • Q(i);OGATE,XP(H)::R(J),XQ(i)
      • R(e);SBLOCK,XP(F)::R1(I)
      • S(g);SBLOCK,XR(I)::S(N)
      • P(h);XP(G)::S(N),XP(h)
      • B(a);SBLOCK::QAR1(B)
      • B(f);::QAB(B),XB(a)
      • B(f);::QAB1(B)
      • S(g);N_GUARD::R(J),XS(g)
      • S(g);N_GUARD::R(J)
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