MESON Chess Problem Database

Problem Display
PID: 170041 (1KB4b/8/2pP1qR1/3k1p2/1P3Bn1/3P1p2/2N3P1/7Q w - - 0 1)

Solivella, Nicandro

Enroque!!, 1947

1KB4b/8/2pP1qR1/3k1p2/1P3Bn1/3P1p2/2N3P1/7Q

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Be6#
    • 1...Qb2
      • 2.Be6#
    • 1...Qc3
      • 2.Be6#
    • 1...Qd4
      • 2.Be6#
    • 1...Qh4
      • 2.Be6#
    • 1...Qg5
      • 2.Be6#
    • 1...Qg7
      • 2.Be6#
    • 1...Qxd6+
      • 2.Rxd6#
    • 1...Qe6
      • 2.Bxe6#
    • 1...fxg2
      • 2.Qxg2#
    • 1...f2
      • 2.g3#
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa2#
      • 1...Qxd6+
        • 2.Rxd6#
      • 1...Qxa1
        • 2.Be6#
      • 1...Se5
        • 2.Qd4#
      • 1...c5
        • 2.Qa8#
      • 1...Qb2
        • 2.Be6#
      • 1...Qc3
        • 2.Be6#
      • 1...Qd4
        • 2.Be6#
      • 1...Se3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(f);N_GUARD::B(J)
    • Q(f);N_GUARD,P_PINP(E)::B(J)
    • Q(f);CHECK,OGATE,XP(G)::R1(H),XQ(f)
    • Q(f);N_GUARD::B(J),XQ(f)
    • P(a);OGATE,P_SPINP(a),XP(C)::QAB(A),XP(a)
    • P(a);::QAB(A)+P(C)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(f);CHECK,OGATE,XP(G)::R1(H),XQ(f)
      • Q(f);N_GUARD,XQ(A)::B(J)
      • S(b);S_CUTQ(f)::QAR1(A)
      • P(e);OGATEB::QAB(A)
      • Q(f);N_GUARD,P_PINP(E)::B(J)
      • Q(f);N_GUARD::B(J)
      • S(b);N_GUARD::S(B),XS(b)
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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).