MESON Chess Problem Database

Problem Display
PID: 37065 (4q3/7n/4ppR1/r3N1nK/2pQPk1B/1PN3p1/4P1pr/3b3R w - - 0 1)

Schirdewan, Udo

Xadrez Brasileiro, 1932

4q3/7n/4ppR1/r3N1nK/2pQPk1B/1PN3p1/4P1pr/3b3R

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg6+
      • 2.Sxg6#
    • 1...Rxh4+
      • 2.Rxh4#
    • 1...Rxe5
      • 2.Qd2#
    • 1...Bc2
      • 2.e3#
    • 1...Bxe2+
      • 2.Sxe2#
    • 1...Bxb3
      • 2.e3#
    • 1...Sf3
      • 2.e3#
    • 1...Sh3
      • 2.Bxg3#
    • 1...Sxe4
      • 2.Qxe4#
    • 1...Sf7
      • 2.Rg4#
    • 1...cxb3
      • 2.Sd3#
    • 1...fxe5
      • 2.Qd2#
  • Keys
    • 1.bxc4!
      • threat
        • 2.Sd3#
      • 1...Qxg6+
        • 2.Sxg6#
      • 1...Rxh4+
        • 2.Rxh4#
      • 1...Bxe2+
        • 2.Sxe2#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...fxe5
        • 2.Qd2#
      • 1...Bc2
        • 2.e3#
      • 1...Sf3
        • 2.e3#
      • 1...Sh3
        • 2.Bxg3#
      • 1...Sf7
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(l);CHECK,XR(J)::S(H),XQ(l)
    • R(c);CHECK,OGATE,XB(G)::R(A),XR(c)
    • R(g);SBLOCK,XS(H)::QAB(E)
    • B(a);N_PINP(B)::P(B)
    • B(a);CHECK,XP(B)::S(D),XB(a)
    • B(a);N_PINP(B),XP(C)::P(B)
    • S(h);N_PINP(B),P_PINS(H)::P(B)
    • S(h);N_PINB(G),P_PINS(H)::B(G),XP(d)
    • S(h);OGATE,P_PINS(H),P_SPINS(h),XP(F)::QAR1(E),XS(h)
    • S(h);N_PINR(J),P_PINS(H)::R1(J)
    • P(e);N_GUARD,XP(C)::S(H)
    • P(j);SBLOCK,XS(H)::QAB(E)
  • Actual
    • P(C);XP(e)
    • Threat
      • S(H)
    • Vars
      • Q(l);CHECK,XR(J)::S(H),XQ(l)
      • R(c);CHECK,OGATE,XB(G)::R(A),XR(c)
      • B(a);CHECK,XP(B)::S(D),XB(a)
      • R(g);SBLOCK,XS(H)::QAB(E)
      • S(h);OGATE,P_PINS(H),P_SPINS(h),XP(F)::QAR1(E),XS(h)
      • P(j);SBLOCK,XS(H)::QAB(E)
      • B(a);N_PINP(B)::P(B)
      • S(h);N_PINP(B),P_PINS(H)::P(B)
      • S(h);N_PINB(G),P_PINS(H)::B(G),XP(d)
      • S(h);N_PINR(J),P_PINS(H)::R1(J)
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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).