MESON Chess Problem Database

Problem Display
PID: 72143 (4r3/3N4/1PP5/Q2B2N1/1K1k2p1/1p1P4/3RnP1p/2r4q w - - 0 1)

Paslack, Rainer

Probleemblad, 2007

4r3/3N4/1PP5/Q2B2N1/1K1k2p1/1p1P4/3RnP1p/2r4q

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.dxe4#
    • 1...Ra1
      • 2.Qc5#
    • 1...Rb1
      • 2.Qc5#
    • 1...Rd1
      • 2.Qc5#
    • 1...Re1
      • 2.Qc5#
    • 1...Rf1
      • 2.Qc5#
    • 1...Rg1
      • 2.Qc5#
    • 1...Rc4+
      • 2.dxc4#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Re4
      • 2.dxe4#
    • 1...Re6
      • 2.Sxe6#
    • 1...Ra8
      • 2.Se6#
    • 1...Rb8
      • 2.Se6#
    • 1...Rc8
      • 2.Se6#
    • 1...Rd8
      • 2.Se6#
    • 1...Rf8
      • 2.Se6#
    • 1...Rg8
      • 2.Se6#
    • 1...Rh8
      • 2.Se6#
    • 1...Sc3
      • 2.Qc5#
  • Tries
    • 1.Bxh1?
      • threat
        • 2.Qd5#
      • 1...Rc4+
        • 2.dxc4#
      • 1...Rxh1
        • 2.Qc5#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Re4
        • 2.dxe4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Sc3
        • 2.Qc5#
      • 1...Sf4!
    • 1.Bc4?
      • threat
        • 2.Qc5#
      • 1...Rxc4+
        • 2.dxc4#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Qxc6!
    • 1.Be4?
      • threat
        • 2.Qd5#
      • 1...Rc4+
        • 2.dxc4#
      • 1...Qxe4
        • 2.dxe4#
      • 1...Rxe4
        • 2.dxe4#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Sc3
        • 2.Qc5#
      • 1...Sf4!
  • Keys
    • 1.Be6!
      • threat
        • 2.Qe5#
      • 1...Rc4+
        • 2.dxc4#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...Qe4
        • 2.dxe4#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Rc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 15
  • Sets
    • Q(b);OGATE::R(A)+P(C),XQ(b)
    • R(a);N_GUARD::QAB1(E)
    • R(a);CHECK,OGATE::R(A)+P(C),XR(a)
    • R(a);N_GUARD::QAB1(E),XR(a)
    • R(h);OGATE::R(A)+P(C),XR(h)
    • R(h);N_GUARD::S(G),XR(h)
    • R(h);N_GUARD::S(G)
    • R(h);N_GUARD,P_PINP(H)::S(G)
    • S(c);S_CUTR(a)::QAB1(E)
  • Tries
    • Try
      • B(F);XQ(b)
      • Threat
        • QAR1(E)
      • Vars
        • R(a);CHECK,OGATE::R(A)+P(C),XR(a)
        • R(a);N_GUARD,XB(F)::QAB1(E)
        • R(a);N_GUARD::QAB1(E),XR(a)
        • R(h);OGATE::R(A)+P(C),XR(h)
        • R(h);N_GUARD::QAB1(E),XR(h)
        • S(c);S_CUTR(a)::QAB1(E)
      • Refutation
        • S(c);
    • Try
      • B(F);
      • Threat
        • QAB1(E)
      • Vars
        • R(a);CHECK,OGATE,XB(F)::R(A)+P(C),XR(a)
        • Q(b);N_GUARD::QAR1(E),XQ(b)
        • R(h);N_GUARD::QAB1(E),XR(h)
      • Refutation
        • Q(b);XP(I)
    • Try
      • B(F);
      • Threat
        • QAR1(E)
      • Vars
        • R(a);CHECK,OGATE::R(A)+P(C),XR(a)
        • Q(b);OGATE,XB(F)::R(A)+P(C),XQ(b)
        • R(h);OGATE,XB(F)::R(A)+P(C),XR(h)
        • R(a);N_GUARD::QAB1(E),XR(a)
        • R(h);N_GUARD::QAB1(E),XR(h)
        • S(c);S_CUTR(a)::QAB1(E)
      • Refutation
        • S(c);
  • Actual
    • B(F);
    • Threat
      • QAB1(E)
    • Vars
      • R(a);CHECK,OGATE::R(A)+P(C),XR(a)
      • R(h);XB(F)::S(G),XR(h)
      • Q(b);OGATE::R(A)+P(C),XQ(b)
      • Q(b);N_GUARD::QAR1(E),XQ(b)
      • R(a);N_GUARD::QAB1(E),XR(a)
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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).