MESON Chess Problem Database

Problem Display
PID: 160117 (8/8/6K1/1Q2p3/R2Pkp2/2p2rp1/2N2p2/r7 w - - 0 1)

Challenger, Alfred Clement

The Times, 1896

8/8/6K1/1Q2p3/R2Pkp2/2p2rp1/2N2p2/r7

#2

5 + 8

15 British Chess Magazine 1908

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.dxe5#
      • 2.d5#
    • 1...Re1
      • 2.dxe5#
      • 2.d5#
    • 1...Rf1
      • 2.dxe5#
      • 2.d5#
    • 1...Rg1
      • 2.dxe5#
      • 2.d5#
    • 1...Rh1
      • 2.dxe5#
      • 2.d5#
    • 1...Rd3
      • 2.Qc6#
      • 2.Qb7#
    • 1...exd4
      • 2.Rxd4#
      • 2.Qf5#
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qxe5#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxd4
        • 2.Sc2#
      • 1...exd4
        • 2.Qe8#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Re3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(A);
    • Threat
      • QAR1(D),XP(h)
    • Vars
      • K(f);P-FLIGHT::QAR1(D)
      • K(f);P-FLIGHT,XP(C)::R(B)+S(A),DCHECK
      • P(h);OGATEB,SBLOCK,XP(C)::QAR(D)
      • R(d);N_GUARD::QAB1(D),XR(d)
      • R(d);SBLOCK::QAB1(D)
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