MESON Chess Problem Database

Problem Display
PID: 276054 (6b1/1B4R1/1K5p/4pp2/2NRpkPQ/1pr5/1Br1PN2/6q1 w - - 0 1)

Jambon, Heinrich

Die Schwalbe, 1933

6b1/1B4R1/1K5p/4pp2/2NRpkPQ/1pr5/1Br1PN2/6q1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.g5#
    • 1...Qb1
      • 2.g5#
    • 1...Qc1
      • 2.g5#
    • 1...Qd1
      • 2.g5#
    • 1...Qe1
      • 2.g5#
    • 1...Qf1
      • 2.g5#
    • 1...Qg3
      • 2.Qxh6#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rg3
      • 2.Qxh6#
    • 1...Rh3
      • 2.Sxh3#
  • Tries
    • 1.Qh2+?
      • 1...Qg3
        • 2.Sh3#
        • 2.Qxh6#
      • 1...Rg3
        • 2.Sd3#
        • 2.Sh3#
        • 2.Qxh6#
      • 1...Qxh2!
    • 1.gxf5+?
      • 1...Qg4
        • 2.Qxg4#
      • 1...Kxf5!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qxh6#
      • 1...Qxf2+
        • 2.Qxf2#
      • 1...Qxg4
        • 2.Sh3#
      • 1...Rxd3
        • 2.Bxe5#
      • 1...exd3
        • 2.e3#
      • 1...fxg4
        • 2.Qf6#
      • 1...Qh2
        • 2.Qxh2#
      • 1...Qh1
        • 2.Qg3#
      • 1...e3
        • 2.Sh3#
      • 1...h5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::QAR(G)+P(F)
    • Q(a);SBLOCK::QAB(G),XP(i)
    • R(d);N_GUARD::S(C),XR(d)
    • R(d);SBLOCK::QAB(G),XP(i)
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • Q(a);XQ(G)
    • Try
      • P(F);CHECK,XP(h)
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(G),XQ(a)
      • Refutation
        • K(f);N_SPINP(e),P-FLIGHT,XP(F)
  • Actual
    • R(E);N_PINP(e),P_SPINS(C)
    • Threat
      • QAB(G),XP(i)
    • Vars
      • Q(a);CHECK,OGATE,XS(C)::QAR2(G),XQ(a)
      • Q(a);N_PINS(C),P_SPINQ(a),XP(F)::S(C)
      • R(d);OGATE,XR(E)::B(A),XP(g)
      • P(e);XR(E)::P(B)
      • P(h);OGATEB,P_SPINP(h),XP(F)::QAR2(G)
      • Q(a);N_GUARD,N_PINS(C)::QAB(G),XQ(a)
      • Q(a);N_GUARD,N_PINS(C)::QAB1(G)
      • P(e);N_PINS(C)::S(C)
      • P(i);N_GUARD::QAB1(G)
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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).