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Problem Display

PID: 102466 (8/3p2N1/3P4/4N1nR/1p1P1krq/1Rb2Prp/1pBP3B/1K6 w - - 0 1)

Zilahi, Zoltan

L'Echiquier de France, 1957

8/3p2N1/3P4/4N1nR/1p1P1krq/1Rb2Prp/1pBP3B/1K6

#2

11 + 10

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Qxh5
  - 2.Sxh5#
- 1...Bxd2
  - 2.Sg6#
- 1...Bxd4
  - 2.Sg6#
- 1...Sxf3
  - 2.Rf5#
- 1...Se4
  - 2.Rf5#
- 1...Se6
  - 2.Rf5#
- 1...Sf7
  - 2.Rf5#
- 1...Sh7
  - 2.Rf5#
Tries
- 1.Se6+?
  - 1...Sxe6
    - 2.Rf5#
  - 1...dxe6!
- 1.Bd1?
  - threat
    - 2.Sd3#
    - 2.Sg6#
  - 1...Qxh5
    - 2.Sd3#
  - 1...Bxd2
    - 2.Sg6#
  - 1...Se4
    - 2.Sd3#
    - 2.Rf5#
  - 1...Se6
    - 2.Sd3#
    - 2.Rf5#
  - 1...Sf7
    - 2.Sd3#
    - 2.Rf5#
  - 1...Sh7
    - 2.Sd3#
    - 2.Rf5#
  - 1...Sxf3!
- 1.Be4?
  - threat
    - 2.Sd3#
    - 2.Sg6#
  - 1...Qxh5
    - 2.Sd3#
    - 2.Sxh5#
  - 1...Bxd2
    - 2.Sg6#
  - 1...Sxe4
    - 2.Rf5#
  - 1...Se6
    - 2.Sd3#
    - 2.Rf5#
  - 1...Sf7
    - 2.Sd3#
    - 2.Rf5#
  - 1...Sh7
    - 2.Sd3#
    - 2.Rf5#
  - 1...Sxf3!
- 1.Rxc3?
  - threat
    - 2.Sg6#
  - 1...Qxh5
    - 2.Sxh5#
  - 1...Sxf3
    - 2.Rxf3#
    - 2.Rf5#
  - 1...Se4
    - 2.Rf5#
  - 1...Se6
    - 2.Rf5#
  - 1...Sf7
    - 2.Rf5#
  - 1...Sh7
    - 2.Rf5#
  - 1...bxc3!
- 1.Rxh4?
  - threat
    - 2.Sh5#
    - 2.Rxg4#
  - 1...Bxd4
    - 2.Sg6#
  - 1...Sxf3
    - 2.Rxg4#
  - 1...Se4
    - 2.Rxg4#
  - 1...Se6
    - 2.Rxg4#
  - 1...Sf7
    - 2.Rxg4#
  - 1...Sh7
    - 2.Rxg4#
  - 1...Rxh4!
Keys
- 1.Bh7!
  - 1...Qxh5
    - 2.Sxh5#
  - 1...Bxd2
    - 2.Sg6#
  - 1...Bxd4
    - 2.Sg6#
  - 1...Sxf3
    - 2.Sd3#
  - 1...Sxh7
    - 2.Rf5#
  - 1...Se4
    - 2.Rf5#
  - 1...Se6
    - 2.Rf5#
  - 1...Sf7
    - 2.Rf5#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- Q(h);XR(I)::S(K),XQ(h)
- B(b);XP(C)::S(H)
- B(b);XP(G)::S(H)
- S(i);OGATE,XP(F)::R1(I)
- S(i);OGATE::R1(I)
Tries
- Try
  - S(K);CHECK
  - Vars
    - S(i);OGATE,XS(K)::R1(I)
  - Refutation
    - P(j);XS(K)
- Try
  - B(B);
  - Threat
    - DUALS(2)
  - Vars
    - Q(h);XR(I)::S(H)
    - B(b);XP(C)::S(H)
  - Refutation
    - S(i);XP(F)
- Try
  - B(B);
  - Threat
    - DUALS(2)
  - Vars
    - B(b);XP(C)::S(H)
    - S(i);OGATE,XB(B)::R1(I)
  - Refutation
    - S(i);XP(F)
- Try
  - R(E);XB(b)
  - Threat
    - S(H)
  - Vars
    - Q(h);XR(I)::S(K),XQ(h)
    - S(i);OGATE::R1(I)
  - Refutation
    - P(e);XR(E)
- Try
  - R(I);XQ(h)
  - Threat
    - DUALS(2)
  - Vars
    - B(b);XP(G)::S(H)
    - S(i);XP(F)::R1(I),XR(g)
    - S(i);::R1(I),XR(g)
  - Refutation
    - R(g);XR(I)
Actual
- B(B);
- Vars
  - Q(h);XR(I)::S(K),XQ(h)
  - B(b);XP(C)::S(H)
  - B(b);XP(G)::S(H)
  - S(i);SBLOCK,XP(F)::S(H)
  - S(i);OGATE,XB(B)::R1(I)
  - S(i);OGATE::R1(I)

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).