MESON Chess Problem Database

Problem Display
PID: 101138 (nR6/N2Q4/1r3p2/2p5/2k5/3N4/3K4/R2b4 w - - 0 1)

Moran, Patrick

Good Companions, 1922

nR6/N2Q4/1r3p2/2p5/2k5/3N4/3K4/R2b4

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qa4#
    • 1...Rb2+
      • 2.Sxb2#
    • 1...Ra6
      • 2.Sb2#
    • 1...Rc6
      • 2.Sb2#
    • 1...Re6
      • 2.Sb2#
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sa5#
      • 1...Rb2+
        • 2.Sxb2#
      • 1...Kb3
        • 2.Sa5#
      • 1...Kb5
        • 2.Sce5#
      • 1...Rxc6
        • 2.Sb2#
      • 1...Rb5
        • 2.Qe6#
        • 2.Qf7#
      • 1...Ra6
        • 2.Sb2#
        • 2.Qe6#
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(b);P_SPINR(d),S_FLIGHT::QAB1(E)
    • R(d);CHECK,N_GUARD::S(C),XR(d)
    • R(d);N_GUARD::S(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(d);CHECK,N_GUARD::S(C),XR(d)
      • K(b);P_SPINR(d),S_FLIGHT::S(D)
      • K(b);P_SPINR(d),S_FLIGHT::QAB(E)+S(D)
      • R(d);N_GUARD,XS(D)::S(C)
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