MESON Chess Problem Database

Problem Display
PID: 170011 (B4r2/1N4p1/1p1b4/1P1k1P2/1p2R1K1/1P3p2/1B1P1N2/q2b3Q w - - 0 1)

Gabor, Nicholas

HM., Enroque!!, 1946

B4r2/1N4p1/1p1b4/1P1k1P2/1p2R1K1/1P3p2/1B1P1N2/q2b3Q

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Re5#
    • 1...Be5
      • 2.Rxe5#
    • 1...Be7
      • 2.Re5#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qd3#
        • 2.Qc4#
      • 1...Qxb2
        • 2.Qc4#
      • 1...Bxb3
        • 2.Qd3#
      • 1...Qb1
        • 2.Qc4#
      • 1...Qc1
        • 2.Qd3#
      • 1...Rc8
        • 2.Qd3#
      • 1...Bc2
        • 2.Qc4#
      • 1...Bc5
        • 2.Re5#
        • 2.Qc4#
      • 1...Be5
        • 2.Rxe5#
        • 2.Qc4#
      • 1...Be2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Rd4#
      • 1...f2+
        • 2.Re2#
      • 1...Kxe4
        • 2.Sbc5#
      • 1...Qxb2
        • 2.Sd8#
      • 1...Rxf5
        • 2.Sa5#
      • 1...Bc5
        • 2.Re5#
      • 1...Be5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::R1(F)
    • B(g);N_GUARD::R1(F),XB(g)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XB(B)::QAB1(A)
        • B(b);XP(E)::QAR2(A)
        • Q(a);::QAB1(A)
        • Q(a);::QAR2(A)
        • R(i);::QAR2(A)
        • B(b);::QAB1(A)
      • Refutation
        • B(b);
  • Actual
    • S(D);
    • Threat
      • R1(F)
    • Vars
      • P(c);CHECK,OGATEB::QAB(A)+R(F)
      • K(e);P_SPINP(c),S_FLIGHT,XR(F)::B(K)+S(J),DCHECK
      • Q(a);N_GUARD,XB(B)::B(K)+S(J)
      • R(i);N_GUARD,XP(I)::B(K)+S(J)
      • B(g);N_GUARD::R1(F)
      • B(g);N_GUARD::R1(F),XB(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).