MESON Chess Problem Database

Problem Display
PID: 216252 (2n5/1R5B/2bP4/2R2NP1/3pkB2/Kp3r2/4p3/4Q3 w - - 0 1)

Clarke, Thomas Denton

Australasian (The), 1882

2n5/1R5B/2bP4/2R2NP1/3pkB2/Kp3r2/4p3/4Q3

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb1#
    • 1...Kxf4
      • 2.Qh4#
    • 1...Rxf4
      • 2.Qxe2#
    • 1...d3
      • 2.Rb4#
      • 2.Qb4#
  • Tries
    • 1.Sxd4+?
      • 1...Kxd4
        • 2.Qb4#
      • 1...Kxf4!
    • 1.Re7+?
      • 1...Kd3
        • 2.Qd2#
        • 2.Qb1#
        • 2.Qxe2#
      • 1...Kxf4
        • 2.Qh4#
      • 1...Sxe7!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Se3#
        • 2.Sg3#
        • 2.Sh4#
        • 2.Sh6#
        • 2.Se7#
        • 2.Sg7#
      • 1...b2+
        • 2.Se3#
      • 1...Kd3
        • 2.Qb1#
      • 1...Kxf4
        • 2.Qh4#
      • 1...Rxf4
        • 2.Qxe2#
      • 1...Sxd6
        • 2.Sg3#
        • 2.Sxd6#
      • 1...Rf1
        • 2.Sh4#
      • 1...Rf2
        • 2.Sh4#
      • 1...Rc3
        • 2.Sh4#
      • 1...Re3
        • 2.Sh4#
      • 1...Rg3
        • 2.Sh4#
      • 1...Rh3
        • 2.Sh4#
      • 1...Rd3
        • 2.Sh4#
      • 1...Bd7
        • 2.Sg3#
      • 1...Se7
        • 2.Sg3#
        • 2.Sxe7#
      • 1...d3
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINP(a),S_FLIGHT::QAB(A)
    • K(e);N_SPINP(a),OGATEB,P-FLIGHT,XB(C)::QAR2(A)
    • R(c);N_GUARD,SBLOCK,XB(C)::QAR2(A),XP(a)
  • Tries
    • Try
      • S(E);CHECK,XP(d)
      • Vars
        • K(e);N_SPINP(a),P-FLIGHT,XS(E)::QAR2(A)
      • Refutation
        • K(e);N_SPINP(a),P-FLIGHT,XB(C)
    • Try
      • R(H);CHECK
      • Vars
        • K(e);N_SPINP(a),P-FLIGHT,XB(C)::QAR2(A)
      • Refutation
        • S(g);XR(H)
  • Actual
    • R(H);
    • Threat
      • DUALS(6)
    • Vars
      • P(b);CHECK::B(I)+S(E)
      • K(e);N_SPINP(a),S_FLIGHT::QAB(A)
      • K(e);N_SPINP(a),OGATEB,P-FLIGHT,XB(C)::QAR2(A)
      • R(c);N_GUARD,SBLOCK,XB(C)::QAR2(A),XP(a)
      • R(c);::B(I)+S(E)
      • R(c);N_SPINP(a)::B(I)+S(E)
      • R(c);SBLOCK::B(I)+S(E)
      • B(f);::B(I)+S(E),DCHECK
      • P(d);OGATEB,SBLOCK::QAR(A)
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