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Problem Display

PID: 267426 (6B1/4B2n/n2N2pb/p2pk3/4b2N/2P3P1/1R3P2/R5K1 w - - 0 1)

Ivanov, Albert Fedorovich

Zadachi i Etyudi, 2013

6B1/4B2n/n2N2pb/p2pk3/4b2N/2P3P1/1R3P2/R5K1

#2

10 + 8

SOLUTION

SOUND
Sets
- 1...Bb1
  - 2.Sf3#
- 1...Bh1
  - 2.Sxg6#
- 1...Bc2
  - 2.Sf3#
- 1...Bg2
  - 2.Sxg6#
- 1...Bd3
  - 2.Sf3#
- 1...Bf3
  - 2.Sxf3#
  - 2.Sxg6#
- 1...Bf5
  - 2.Sf3#
- 1...Bg7
  - 2.f4#
- 1...Bf8
  - 2.f4#
- 1...Sg5
  - 2.f4#
- 1...d4
  - 2.Sc4#
Tries
- 1.Re1?
  - threat
    - 2.Sf3#
    - 2.Sxg6#
  - 1...Sg5
    - 2.Sxg6#
    - 2.f4#
  - 1...Sf8
    - 2.Sf3#
  - 1...g5
    - 2.Sf3#
    - 2.Sg6#
  - 1...Be3!
- 1.Rxa5?
  - threat
    - 2.Sc4#
  - 1...Bb1
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Bh1
    - 2.Sxg6#
  - 1...Bc2
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Bg2
    - 2.Sxg6#
  - 1...Bd3
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Bf3
    - 2.Sxf3#
    - 2.Sxg6#
  - 1...Bf5
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Sc5!
- 1.Re2?
  - threat
    - 2.Sf3#
    - 2.Sxg6#
  - 1...Sg5
    - 2.Sxg6#
    - 2.f4#
  - 1...Sf8
    - 2.Sf3#
  - 1...g5
    - 2.Sf3#
    - 2.Sg6#
  - 1...Be3!
- 1.Rb5?
  - threat
    - 2.Sc4#
  - 1...Bb1
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Bh1
    - 2.Sxg6#
  - 1...Bc2
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Bg2
    - 2.Sxg6#
  - 1...Bd3
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Bf3
    - 2.Sxf3#
    - 2.Sxg6#
  - 1...Bf5
    - 2.Sf3#
    - 2.Rxd5#
  - 1...Sc5!
Keys
- 1.Rb6!
  - threat
    - 2.Sf7#
  - 1...Bb1
    - 2.Sf3#
  - 1...Bh1
    - 2.Sxg6#
  - 1...Bc2
    - 2.Sf3#
  - 1...Bg2
    - 2.Sxg6#
  - 1...Bd3
    - 2.Sf3#
  - 1...Bf3
    - 2.Sxf3#
    - 2.Sxg6#
  - 1...Bf5
    - 2.Sf3#
  - 1...Sg5
    - 2.f4#
  - 1...d4
    - 2.Sc4#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
Sets
- B(a);N_GUARD::S(G)
- B(a);N_GUARD::S(G),XP(f)
- B(g);N_GUARD::P(D)
- S(h);S_CUTB(g)::P(D)
- P(c);N_GUARD::S(H)
Tries
- Try
  - R(A);P_PINB(a)
  - Threat
    - DUALS(2)
  - Vars
    - S(h);::S(G)
  - Refutation
    - B(g);N_SPINB(a),P_PINP(D)
- Try
  - R(A);P_PINP(c),XP(b)
  - Threat
    - S(H)
  - Vars
    - B(a);N_GUARD::S(G),XP(f)
  - Refutation
    - S(e);N_SPINP(c)
- Try
  - R(C);P_PINB(a)
  - Threat
    - DUALS(2)
  - Vars
    - S(h);::S(G)
  - Refutation
    - B(g);N_SPINB(a),P_PINP(D)
- Try
  - R(C);P_PINP(c)
  - Threat
    - S(H)
  - Vars
    - B(a);N_GUARD::S(G),XP(f)
  - Refutation
    - S(e);N_SPINP(c)
Actual
- R(C);
- Threat
  - S(H)
- Vars
  - B(a);N_GUARD::S(G)
  - B(a);N_GUARD::S(G),XP(f)
  - S(h);S_CUTB(g)::P(D)
  - P(c);N_GUARD::S(H)

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).