MESON Chess Problem Database

Problem Display
PID: 94965 (2Q3K1/B3N1nN/3p1P1p/1p1Pk3/6p1/2PP1p2/4n2r/4r3 w - - 0 1)

Horn, C (= Laws, BG)

British Chess Magazine, 1912

2Q3K1/B3N1nN/3p1P1p/1p1Pk3/6p1/2PP1p2/4n2r/4r3

#2

9 + 10

6490 yacpdb 2009
3713 Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Bd4#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sh5
      • 2.Qf5#
    • 1...Se8
      • 2.Qf5#
  • Tries
    • 1.Qxg4?
      • threat
        • 2.Qe4#
      • 1...Sxc3
        • 2.Bd4#
        • 2.Qg3#
        • 2.Qd4#
        • 2.d4#
      • 1...Sc1
        • 2.Bd4#
        • 2.Qg3#
        • 2.Qd4#
        • 2.d4#
      • 1...Sg1
        • 2.Bd4#
        • 2.Qg3#
        • 2.Qd4#
        • 2.d4#
      • 1...Sg3
        • 2.Bd4#
        • 2.Qxg3#
        • 2.Qd4#
        • 2.d4#
      • 1...Sd4
        • 2.Bxd4#
        • 2.Qg3#
        • 2.Qxd4#
        • 2.cxd4#
      • 1...Sf4
        • 2.Bd4#
      • 1...Rh4!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Qxd6#
      • 1...Sxe6!
    • 1.Qc4?
      • threat
        • 2.Qe4#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sf4
        • 2.Bd4#
        • 2.Qd4#
      • 1...bxc4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qe3#
      • 1...Kf4
        • 2.Qxd6#
      • 1...Sxc3
        • 2.Qd4#
      • 1...dxc5
        • 2.Bb8#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...Sf5
        • 2.Sg6#

This anticipates 183464(1914)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD,SBLOCK::B(E)
    • S(j);N_GUARD::QAR1(H),XS(j)
    • S(j);N_GUARD::QAR1(H)
  • Tries
    • Try
      • Q(H);XP(e)
      • Threat
        • QAR1(H)
      • Vars
        • S(b);N_GUARD::B(E)
      • Refutation
        • R(c);
    • Try
      • Q(H);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB(H),XP(h)
      • Refutation
        • S(j);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • S(b);N_GUARD,XP(A)::QAB1(H)
        • S(b);N_GUARD::QAB1(H),XS(b)
        • S(b);N_GUARD::QAB1(H)
      • Refutation
        • P(f);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR2(H)
    • Vars
      • K(g);S_FLIGHT::QAB(H),XP(h)
      • S(b);N_GUARD,XP(A)::QAB1(H)
      • P(h);OGATEB,XQ(H)::B(E)
      • S(b);N_GUARD::QAB1(H)
      • S(b);N_GUARD::QAB1(H),XS(b)
      • S(j);SBLOCK::S(F)
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