MESON Chess Problem Database

Problem Display
PID: 16685 (B3R3/3N1p2/3p1Pp1/3Nn1p1/3k2p1/1P4K1/2Pp4/7Q w - - 0 1)

Hassberg, Eric Manfred

The Chess Review, 1942

B3R3/3N1p2/3p1Pp1/3Nn1p1/3k2p1/1P4K1/2Pp4/7Q

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Re4#
      • 2.Qe4#
      • 2.c3#
    • 1...Sf3
      • 2.Qa1#
    • 1...Sc4
      • 2.Re4#
      • 2.Qe4#
    • 1...Sc6
      • 2.Qe4#
    • 1...Sxd7
      • 2.Qg1#
  • Tries
    • 1.Rxe5?
      • threat
        • 2.Re4#
        • 2.Qe4#
        • 2.Qa1#
        • 2.Qg1#
      • 1...d1Q
        • 2.Re4#
        • 2.Qe4#
        • 2.Qxd1#
      • 1...d1S
        • 2.Re4#
        • 2.Qe4#
        • 2.Qxd1#
      • 1...d1B
        • 2.Re4#
        • 2.Qe4#
        • 2.Qxd1#
        • 2.Qg1#
      • 1...d1R
        • 2.Re4#
        • 2.Qe4#
        • 2.Qxd1#
      • 1...dxe5!
  • Keys
    • 1.Qd1!
      • 1...Ke4
        • 2.Qxg4#
      • 1...Sxd7
        • 2.Qg1#
      • 1...Sd3
        • 2.c3#
      • 1...Sf3
        • 2.Qa1#
      • 1...Sc4
        • 2.Qxg4#
      • 1...Sc6
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);::QAB(A)
    • S(d);::QAR1(A)
    • S(d);XS(G)::QAB(A)
  • Tries
    • Try
      • R(I);XS(d)
      • Threat
        • DUALS(4)
      • Refutation
        • P(f);XR(I)
  • Actual
    • Q(A);P_PINP(a)
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT,P_SPINS(d)::QAR2(A),XP(c)
      • S(d);XS(G)::QAB(A)
      • S(d);N_SPINP(a),SBLOCK::P(B)
      • S(d);::QAB(A)
      • S(d);N_GUARD::QAR(A),XP(c)
      • S(d);N_GUARD::QAR2(A),XP(a)
HTML5 logo

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).