MESON Chess Problem Database

Problem Display
PID: 231516 (2n1N3/2P4p/1n2p1Rb/1Bpk3r/rp3PPp/PP3K2/3pN3/Q7 w - - 0 1)

Dulcsan, Geza

Nepszava, 1927

2n1N3/2P4p/1n2p1Rb/1Bpk3r/rp3PPp/PP3K2/3pN3/Q7

#2

11 + 12

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxe5#
    • 1...Bxf4
      • 2.Sxf4#
    • 1...Bg5
      • 2.Qe5#
    • 1...Sc4
      • 2.bxc4#
    • 1...Sd6
      • 2.Sf6#
    • 1...d1Q
      • 2.Qxd1#
    • 1...d1S
      • 2.Qxd1#
    • 1...d1B
      • 2.Qxd1#
    • 1...d1R
      • 2.Qxd1#
    • 1...c4
      • 2.Qd4#
    • 1...e5
      • 2.Bc6#
  • Tries
    • 1.Rg5+?
      • 1...Bxg5
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Rxg5!
    • 1.Qf6?
      • threat
        • 2.Qxe6#
      • 1...c4
        • 2.Qd4#
      • 1...Re5
        • 2.Qxe5#
      • 1...e5
        • 2.Bc6#
        • 2.Qc6#
        • 2.Qe6#
        • 2.Qf7#
      • 1...hxg6!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Qh1#
      • 1...Re5+
        • 2.Qxe5#
      • 1...Bxf4+
        • 2.Sxf4#
      • 1...Sc4+
        • 2.bxc4#
      • 1...d1S+
        • 2.Qxd1#
      • 1...bxa3
        • 2.Sc3#
      • 1...c4
        • 2.Qd4#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Sd6
        • 2.Sf6#
      • 1...e5
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(g);N_GUARD::QAR1(A),XR(g)
    • B(j);XP(F)::S(B),XB(j)
    • B(j);S_CUTR(g)::QAR1(A)
    • S(h);OGATE::P(D),XS(h)
    • S(l);SBLOCK::S(K)
    • P(a);OGATEB,P_PINS(B)::QAR(A),XQ(a)
    • P(a);OGATEB::QAR(A),XS(a)
    • P(a);OGATEB,P_PINS(B)::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
    • P(e);N_GUARD::QAR1(A)
    • P(i);::B(H)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • B(j);XR(I)::QAR1(A)
        • P(i);P_SPINP(i)::QAR1(A),XP(i)
      • Refutation
        • R(g);XR(I)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(i)
      • Vars
        • P(e);N_GUARD::QAR1(A)
        • R(g);N_GUARD::QAR1(A),XR(g)
      • Refutation
        • P(k);XR(I)
  • Actual
    • K(E);P-FLIGHT,P_SPINP(F)
    • Threat
      • QAB(A)
    • Vars
      • R(g);CHECK,N_GUARD::QAR1(A),XR(g)
      • B(j);CHECK,XP(F)::S(B),XB(j)
      • S(h);CHECK,OGATE::P(D),XS(h)
      • P(a);CHECK,OGATEB::QAR(A),XS(a)
      • P(c);N_GUARD,XP(C)::S(B)
      • P(e);N_GUARD::QAR1(A)
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XR(a)
      • S(l);SBLOCK::S(K)
      • P(i);::B(H)
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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).