MESON Chess Problem Database

Problem Display
PID: 60808 (3K4/B7/2pP1p2/2N1pN2/P1kr1p1R/r1P2Q2/8/2R5 w - - 0 1)

Haring, WH

Good Companions (October), 1916

3K4/B7/2pP1p2/2N1pN2/P1kr1p1R/r1P2Q2/8/2R5

#2

10 + 7

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Se3#
    • 1...Rd2
      • 2.Se3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Re4
      • 2.Qxe4#
      • 2.Qd3#
    • 1...Rd5
      • 2.Se3#
    • 1...Rxd6+
      • 2.Sxd6#
  • Tries
    • 1.Qe2+?
      • 1...Rd3
        • 2.Se3#
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Qf1+?
      • 1...Rd3
        • 2.Se3#
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Qd3+?
      • 1...Kd5
        • 2.c4#
      • 1...Rxd3!
  • Keys
    • 1.Qd1!
      • 1...Rxd6+
        • 2.Sxd6#
      • 1...Kd5
        • 2.c4#
      • 1...Rxc3
        • 2.Qb3#
      • 1...Rxa4
        • 2.Qb3#
      • 1...Rxd1
        • 2.Se3#
      • 1...Ra1
        • 2.Qb3#
      • 1...Ra2
        • 2.Qb3#
      • 1...Rb3
        • 2.Qxb3#
      • 1...Rd2
        • 2.Se3#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Re4
        • 2.Qd3#
      • 1...Rd5
        • 2.Se3#
      • 1...f3
        • 2.Se3#
      • 1...e4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(c);P_SPINP(d)::S(G)
    • R(c);N_GUARD,P_SPINP(d)::QAB1(C),XR(c)
    • R(c);CHECK,P_SPINP(d),XP(H)::S(G),XR(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);N_PINP(H),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);N_PINP(H),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_PINP(H),OGATE,P_SPINR(c),S_FLIGHT::P(B)
      • Refutation
        • R(c);P_SPINP(d),XQ(C)
  • Actual
    • Q(C);
    • Vars
      • R(c);CHECK,P_SPINP(d),XP(H)::S(G),XR(c)
      • K(b);N_PINP(H),OGATE,P_SPINR(c),S_FLIGHT::P(B)
      • R(a);N_GUARD,P_SPINR(a),XP(B)::QAB1(C)
      • R(a);N_GUARD,XP(D)::QAB1(C)
      • R(c);P_SPINP(d),XQ(C)::S(G)
      • R(a);N_GUARD::QAB1(C)
      • R(a);N_GUARD::QAB1(C),XR(a)
      • R(c);P_SPINP(d)::S(G)
      • R(c);N_GUARD,P_SPINP(d)::QAB1(C),XR(c)
      • R(c);N_GUARD,N_PINP(H)::QAB1(C)
      • P(d);N_GUARD,P_SPINR(c)::S(G)
      • P(e);N_GUARD::QAR1(C),XR(c)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).