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Problem Display

PID: 49136 (4Q3/n3pN2/1q2k1K1/1prb1pp1/3R1p2/B3nN1B/3P1br1/8 w - - 0 1)

Eerkes, Allard Pieter

1st Prize=, Nederlandse Bond van Probleemvrienden 050. TT, 1943

4Q3/n3pN2/1q2k1K1/1prb1pp1/3R1p2/B3nN1B/3P1br1/8

#2

8 + 13

5152	Mededelingenblad	1943

SOLUTION

SOUND
Sets
- 1...Rh2
  - 2.S3xg5#
- 1...Rc1
  - 2.Qxe7#
- 1...Rc2
  - 2.Qxe7#
- 1...Rc3
  - 2.Qxe7#
- 1...Rc4
  - 2.Qxe7#
- 1...Rc6
  - 2.Qxe7#
- 1...Rc7
  - 2.Sd8#
- 1...Rc8
  - 2.Qxe7#
- 1...Bg3
  - 2.S3xg5#
- 1...Ba2
  - 2.Qd7#
- 1...Bb3
  - 2.Qd7#
- 1...Bxf3
  - 2.Qd7#
- 1...Bc4
  - 2.Qd7#
- 1...Be4
  - 2.Qd7#
- 1...Bc6
  - 2.Rd6#
- 1...Bb7
  - 2.Qd7#
- 1...Ba8
  - 2.Qd7#
- 1...Sd1
  - 2.Bxf5#
- 1...Sf1
  - 2.Bxf5#
- 1...Sc2
  - 2.Bxf5#
- 1...Sc4
  - 2.Bxf5#
- 1...Sg4
  - 2.S3xg5#
- 1...Sc6
  - 2.Qc8#
- 1...g4
  - 2.S3g5#
Tries
- 1.Bxg2?
  - threat
    - 2.S3xg5#
  - 1...Bxf3
    - 2.Qd7#
  - 1...g4
    - 2.S3g5#
  - 1...Bh4!
- 1.dxe3?
  - threat
    - 2.Bxf5#
  - 1...Bxf3
    - 2.Qd7#
  - 1...Ba2
    - 2.Qd7#
  - 1...Bb3
    - 2.Qd7#
  - 1...Bc4
    - 2.Qd7#
  - 1...Be4
    - 2.Qd7#
  - 1...Bc6
    - 2.Rd6#
  - 1...Bb7
    - 2.Qd7#
  - 1...Ba8
    - 2.Qd7#
  - 1...g4
    - 2.S3g5#
  - 1...Rg4!
Keys
- 1.Rd3!
  - threat
    - 2.Sd4#
  - 1...Bxf3
    - 2.Qd7#
  - 1...Rc1
    - 2.Qxe7#
  - 1...Rc2
    - 2.Qxe7#
  - 1...Rc3
    - 2.Qxe7#
  - 1...Rc4
    - 2.Qxe7#
  - 1...Rc6
    - 2.Qxe7#
  - 1...Rc7
    - 2.Sd8#
  - 1...Rc8
    - 2.Qxe7#
  - 1...Ba2
    - 2.Qd7#
  - 1...Bb3
    - 2.Qd7#
  - 1...Bc4
    - 2.Qd7#
  - 1...Be4
    - 2.Qd7#
  - 1...Bc6
    - 2.Rd6#
  - 1...Bb7
    - 2.Qd7#
  - 1...Ba8
    - 2.Qd7#
  - 1...Sd1
    - 2.Bxf5#
  - 1...Sf1
    - 2.Bxf5#
  - 1...Sc2
    - 2.Bxf5#
  - 1...Sc4
    - 2.Bxf5#
  - 1...Sg4
    - 2.S3xg5#
  - 1...Sc6
    - 2.Qc8#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
Sets
- R(b);N_GUARD::S(C),XP(i)
- R(f);::QAR1(H),XP(m)
- R(f);S_CUTQ(j)::S(G)
- B(a);S_CUTR(b)::S(C),XP(i)
- B(g);::QAB1(H)
- B(g);XS(C)::QAB1(H)
- B(g);OGATE::R1(E)
- S(c);N_GUARD::B(D),XP(h)
- S(c);N_SPINP(h),P_SPINP(m),S_CUTR(b)::S(C),XP(i)
- S(l);N_GUARD,S_CUTR(f)::QAB(H)
- P(i);N_SPINP(h),P_SPINP(m),S_CUTR(b)::S(C)
Tries
- Try
  - B(D);N_PINP(h),P_PINP(m),XR(b)
  - Threat
    - S(C),XP(i)
  - Vars
    - B(g);XS(C)::QAB1(H)
    - P(i);::S(C)
  - Refutation
    - B(a);
- Try
  - P(A);XS(c)
  - Threat
    - B(D),XP(h)
  - Vars
    - B(g);XS(C)::QAB1(H)
    - B(g);::QAB1(H)
    - B(g);OGATE::R1(E)
    - P(i);N_SPINP(h),P_SPINP(m),S_CUTR(b)::S(C)
  - Refutation
    - R(b);N_SPINP(h),P_SPINP(m)
Actual
- R(E);
- Threat
  - S(C)
- Vars
  - B(g);XS(C)::QAB1(H)
  - R(f);::QAR1(H),XP(m)
  - R(f);S_CUTQ(j)::S(G)
  - B(g);::QAB1(H)
  - B(g);OGATE::R1(E)
  - S(c);N_GUARD::B(D),XP(h)
  - S(c);N_SPINP(h),P_SPINP(m),S_CUTR(b)::S(C),XP(i)
  - S(l);N_GUARD,S_CUTR(f)::QAB(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).