MESON Chess Problem Database

Problem Display
PID: 40340 (6b1/2n1p2p/8/8/r4kNK/4Np2/2B2P2/3Q1n2 w - - 0 1)

Janet, Frank

St. Louis Globe Democrat, 1916

6b1/2n1p2p/8/8/r4kNK/4Np2/2B2P2/3Q1n2

#2

6 + 8

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd4#
    • 1...Ra2
      • 2.Qd4#
    • 1...Ra3
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Ra5
      • 2.Qd4#
    • 1...Ra6
      • 2.Qd4#
    • 1...Ra7
      • 2.Qd4#
    • 1...Ra8
      • 2.Qd4#
    • 1...Bc4
      • 2.Qd4#
    • 1...Sxe3
      • 2.fxe3#
    • 1...Sg3
      • 2.fxg3#
    • 1...Se6
      • 2.Sd5#
  • Tries
    • 1.Qd6+?
      • 1...e5
        • 2.Qxe5#
        • 2.Qf6#
        • 2.Qh6#
      • 1...exd6!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qf5#
      • 1...Sxe3
        • 2.fxe3#
      • 1...Ra5
        • 2.Qd4#
      • 1...Be6
        • 2.Qxc7#
      • 1...Sg3
        • 2.fxg3#
      • 1...Se6
        • 2.Sd5#
      • 1...e6
        • 2.Qxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(c);N_GUARD::QAR2(A)
    • R(c);N_GUARD::QAR2(A),XR(c)
    • B(h);S_CUTR(c)::QAR2(A)
    • S(a);OGATE,XS(D)::P(C),XS(a)
    • S(a);OGATE::P(C),XS(a)
    • S(e);N_GUARD,S_CUTB(h)::S(D)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • P(f);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • S(a);OGATE,XS(D)::P(C),XS(a)
      • R(c);N_GUARD::QAR2(A)
      • B(h);S_CUTP(f)::QAB(A),XS(e)
      • S(a);OGATE::P(C),XS(a)
      • S(e);N_GUARD,S_CUTB(h)::S(D)
      • P(f);S_CUTB(h)::QAR(A),XR(c)
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