MESON Chess Problem Database

Problem Display
PID: 121132 (8/1n3NQ1/K1p1b1rb/1Pk3p1/2ppPN2/P5B1/B2r4/8 w - - 0 1)

Wright, Roger John

Chess Chips, 1878

8/1n3NQ1/K1p1b1rb/1Pk3p1/2ppPN2/P5B1/B2r4/8

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg7
      • 2.Sxe6#
    • 1...Bh3
      • 2.Qe5#
    • 1...Bg4
      • 2.Qe5#
    • 1...Bf5
      • 2.Qe5#
    • 1...Bd7
      • 2.Qe5#
    • 1...Bc8
      • 2.Qe5#
  • Tries
    • 1.Qf8+?
      • 1...Sd6
        • 2.Qxd6#
      • 1...Bxf8!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Sxb7#
      • 1...Kd6
        • 2.Sd3#
        • 2.Sfxe6#
        • 2.Sxb7#
      • 1...Rxg7
        • 2.Sfxe6#
      • 1...Sxd8
        • 2.Qe7#
      • 1...cxb5
        • 2.Qc7#
      • 1...Bc8
        • 2.Qe5#
      • 1...Sa5
        • 2.Qe7#
      • 1...Sd6
        • 2.Qa7#

This is a version of 48685

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(h);N_GUARD,XQ(I)::S(E),XB(g)
    • B(g);N_GUARD::QAR2(I)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::QAB1(I),XS(j)
      • Refutation
        • B(i);XQ(I)
  • Actual
    • S(H);
    • Threat
      • S(H),XS(j)
    • Vars
      • R(h);N_GUARD,XQ(I)::S(E),XB(g)
      • S(j);N_GUARD,XS(H)::QAB(I)
      • P(f);OGATEB,XP(F)::QAR2(I)
      • B(g);N_GUARD::QAR2(I)
      • S(j);N_GUARD::QAB(I)
      • S(j);OGATE,SBLOCK::QAB(I)
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