MESON Chess Problem Database

Problem Display
PID: 2125 (6b1/4K3/1Q6/3pkp1n/3R2p1/5p2/5P2/2r5 w - - 0 1)

Brown, Theodore Morris

New York Clipper, 1858

(First published on Sat Jul 3 1858)

6b1/4K3/1Q6/3pkp1n/3R2p1/5p2/5P2/2r5

#2

4 + 8

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Qf6#
    • 1...Sf4
      • 2.Qf6#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sg7
      • 2.Qf6#
  • Tries
    • 1.Re4+?
      • 1...Kxe4
        • 2.Qe3#
      • 1...dxe4
        • 2.Qd6#
      • 1...fxe4!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Rc7+
        • 2.Qxc7#
      • 1...Kxf4
        • 2.Qe3#
      • 1...Sxf4
        • 2.Qe3#
      • 1...d4
        • 2.Qxd4#
        • 2.Qd6#
      • 1...Rc4
        • 2.Qd6#
      • 1...Rd1
        • 2.Qe3#
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...Re1
        • 2.Qd4#
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...Rc3
        • 2.Qd4#
        • 2.Qd6#
      • 1...Rc5
        • 2.Qd6#
      • 1...Rc6
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
        • 2.Qd6#
      • 1...Sf6
        • 2.Qd4#
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(g);N_GUARD::QAB1(C)
    • S(g);N_GUARD::QAB1(C),XS(g)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(e);P-FLIGHT,XR(B)::QAR1(C)
        • P(d);SBLOCK,XR(B)::QAB1(C)
      • Refutation
        • P(f);XR(B)
  • Actual
    • R(B);
    • Threat
      • DUALS(3)
    • Vars
      • R(a);CHECK,N_GUARD::QAB(C),XR(a)
      • K(e);S_FLIGHT,XR(B)::QAB1(C)
      • S(g);XR(B)::QAR2(C)
      • R(a);::QAB1(C)
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