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Problem Display

PID: 150659 (2B5/1RB3p1/p1k3nr/Ppr2QKp/N1R2p2/q2n4/8/1b4b1 w - - 0 1)

Ahlheim, Karl-Heinz

Probleemblad, 1985

2B5/1RB3p1/p1k3nr/Ppr2QKp/N1R2p2/q2n4/8/1b4b1

#2

8 + 13

15148	Sadier Collection	2014

SOLUTION

SOUND
Sets
- 1...Rxc4
  - 2.Qd7#
- 1...Sde5
  - 2.Qe6#
- 1...Sge5
  - 2.Qe4#
Tries
- 1.Sxc5?
  - threat
    - 2.Bd7#
    - 2.Qe4#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Bxc5
    - 2.Qe4#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sxc5
    - 2.Qe6#
    - 2.Qd7#
  - 1...bxc4
    - 2.Bd7#
  - 1...Sde5
    - 2.Qe6#
  - 1...Sge5
    - 2.Qe4#
  - 1...Sc1
    - 2.Bd7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Se1
    - 2.Bd7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sb2
    - 2.Bd7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sf2
    - 2.Bd7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sb4
    - 2.Bd7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sh4
    - 2.Bd7#
    - 2.Qe4#
    - 2.Qd7#
  - 1...Se7
    - 2.Bd7#
    - 2.Qd7#
  - 1...Sf8
    - 2.Qe4#
  - 1...Sh8
    - 2.Bd7#
    - 2.Qe4#
    - 2.Qd7#
  - 1...Qxc5!
- 1.Be5?
  - threat
    - 2.Qe4#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Kd5
    - 2.Qe4#
    - 2.Qe6#
  - 1...Rxc4
    - 2.Qd7#
  - 1...Sdxe5
    - 2.Qe6#
  - 1...bxc4
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sc1
    - 2.Qe6#
    - 2.Qd7#
  - 1...Se1
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sb2
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sf2
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sb4
    - 2.Qe6#
    - 2.Qd7#
  - 1...Sh4
    - 2.Qe4#
    - 2.Qd7#
  - 1...Se7
    - 2.Qd7#
  - 1...Sf8
    - 2.Qe4#
  - 1...Sh8
    - 2.Qe4#
    - 2.Qd7#
  - 1...Sgxe5!
- 1.Ra7?
  - threat
    - 2.Bd7#
  - 1...Sde5
    - 2.Qe6#
  - 1...Sge5
    - 2.Qe4#
  - 1...Sf8!
Keys
- 1.Bb8!
  - threat
    - 2.Rb6#
  - 1...Rxc4
    - 2.Qd7#
  - 1...Sde5
    - 2.Qe6#
  - 1...Sge5
    - 2.Qe4#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- R(g);N_PINQ(D),N_SPINR(g),XR(B)::QAB1(D)
- S(d);N_PINQ(D)::QAR2(D)
- S(k);N_PINQ(D)::QAB(D)
Tries
- Try
  - S(A);N_SPINQ(D),XR(g)
  - Threat
    - DUALS(4)
  - Vars
    - P(f);XR(B)::B(H)
    - S(d);::QAR2(D)
    - S(k);::QAB(D)
  - Refutation
    - Q(c);P_PINQ(D),P_SPINQ(c),XS(A)
- Try
  - B(G);N_SPINQ(D)
  - Threat
    - DUALS(3)
  - Vars
    - R(g);N_SPINR(g),XR(B)::QAB1(D)
    - S(d);XB(G)::QAR2(D)
    - S(k);::QAB1(D)
    - S(k);::QAB(D)
  - Refutation
    - S(k);XB(G)
- Try
  - R(F);
  - Threat
    - B(H)
  - Vars
    - S(d);N_PINQ(D)::QAR2(D)
    - S(k);N_PINQ(D)::QAB(D)
  - Refutation
    - S(k);
Actual
- B(G);
- Threat
  - R1(F)
- Vars
  - R(g);N_PINQ(D),N_SPINR(g),XR(B)::QAB1(D)
  - S(d);N_PINQ(D)::QAR2(D)
  - S(k);N_PINQ(D)::QAB(D)

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).