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Problem Display

PID: 231584 (4n3/N3K3/b7/1p1kp3/1Qp1p3/2B1P3/8/8 w - - 0 1)

Schwarz, Bela

Nepszava, 1927

4n3/N3K3/b7/1p1kp3/1Qp1p3/2B1P3/8/8

#2

5 + 7

6490	yacpdb	2021

SOLUTION

SOUND
Sets
- 1...Bb7
  - 2.Qxb5#
- 1...Bc8
  - 2.Qxb5#
- 1...Sd6
  - 2.Qxd6#
- 1...Sf6
  - 2.Qd6#
- 1...Sc7
  - 2.Qd6#
- 1...Sg7
  - 2.Qd6#
Tries
- 1.Sc6?
  - 1...Bb7
    - 2.Qxb5#
  - 1...Bc8
    - 2.Qxb5#
  - 1...Sd6
    - 2.Qxd6#
  - 1...Sf6
    - 2.Qd6#
  - 1...Sc7
    - 2.Qd6#
  - 1...Sg7
    - 2.Qd6#
  - 1...Kxc6!
- 1.Sc8?
  - 1...Bxc8
    - 2.Qxb5#
  - 1...Bb7
    - 2.Qxb5#
  - 1...Sd6
    - 2.Qxd6#
  - 1...Sf6
    - 2.Qd6#
  - 1...Sc7
    - 2.Qd6#
  - 1...Sg7
    - 2.Qd6#
  - 1...Kc6!
- 1.Ba1?
  - 1...Bb7
    - 2.Qxb5#
  - 1...Bc8
    - 2.Qxb5#
  - 1...Sd6
    - 2.Qxd6#
  - 1...Sf6
    - 2.Qd6#
  - 1...Sc7
    - 2.Qd6#
  - 1...Sg7
    - 2.Qd6#
  - 1...c3!
- 1.Be1?
  - 1...Bb7
    - 2.Qxb5#
  - 1...Bc8
    - 2.Qxb5#
  - 1...Sd6
    - 2.Qxd6#
  - 1...Sf6
    - 2.Qd6#
  - 1...Sc7
    - 2.Qd6#
  - 1...Sg7
    - 2.Qd6#
  - 1...c3!
- 1.Bb2?
  - 1...Bb7
    - 2.Qxb5#
  - 1...Bc8
    - 2.Qxb5#
  - 1...Sd6
    - 2.Qxd6#
  - 1...Sf6
    - 2.Qd6#
  - 1...Sc7
    - 2.Qd6#
  - 1...Sg7
    - 2.Qd6#
  - 1...c3!
- 1.Bd2?
  - 1...Bb7
    - 2.Qxb5#
  - 1...Bc8
    - 2.Qxb5#
  - 1...Sd6
    - 2.Qxd6#
  - 1...Sf6
    - 2.Qd6#
  - 1...Sc7
    - 2.Qd6#
  - 1...Sg7
    - 2.Qd6#
  - 1...c3!
Keys
- 1.Bxe5!
  - 1...Kxe5
    - 2.Qc5#
  - 1...Bb7
    - 2.Qxb5#
  - 1...Bc8
    - 2.Qxb5#
  - 1...Sd6
    - 2.Qxd6#
  - 1...Sf6
    - 2.Qd6#
  - 1...Sc7
    - 2.Qd6#
  - 1...Sg7
    - 2.Qd6#
  - 1...c3
    - 2.Qd4#

FEATURES

Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
Sets
- B(f);N_GUARD::QAR2(C),XP(c)
- S(g);N_GUARD::QAR1(C),XS(g)
- S(g);N_GUARD::QAR1(C)
Tries
- Try
  - S(D);
  - Vars
    - B(f);N_GUARD::QAR2(C),XP(c)
    - S(g);N_GUARD::QAR1(C),XS(g)
    - S(g);N_GUARD::QAR1(C)
  - Refutation
    - K(d);S_FLIGHT,XS(D)
- Try
  - S(D);
  - Vars
    - B(f);N_GUARD,XS(D)::QAR2(C),XP(c)
    - B(f);N_GUARD::QAR2(C),XP(c)
    - S(g);N_GUARD::QAR1(C),XS(g)
    - S(g);N_GUARD::QAR1(C)
  - Refutation
    - K(d);S_FLIGHT
- Try
  - B(A);
  - Vars
    - B(f);N_GUARD::QAR2(C),XP(c)
    - S(g);N_GUARD::QAR1(C),XS(g)
    - S(g);N_GUARD::QAR1(C)
  - Refutation
    - P(a);
- Try
  - B(A);
  - Vars
    - B(f);N_GUARD::QAR2(C),XP(c)
    - S(g);N_GUARD::QAR1(C),XS(g)
    - S(g);N_GUARD::QAR1(C)
  - Refutation
    - P(a);
- Try
  - B(A);
  - Vars
    - B(f);N_GUARD::QAR2(C),XP(c)
    - S(g);N_GUARD::QAR1(C),XS(g)
    - S(g);N_GUARD::QAR1(C)
  - Refutation
    - P(a);
- Try
  - B(A);
  - Vars
    - B(f);N_GUARD::QAR2(C),XP(c)
    - S(g);N_GUARD::QAR1(C),XS(g)
    - S(g);N_GUARD::QAR1(C)
  - Refutation
    - P(a);
Actual
- B(A);XP(e)
- Vars
  - K(d);P-FLIGHT,XB(A)::QAR2(C)
  - B(f);N_GUARD::QAR2(C),XP(c)
  - S(g);N_GUARD::QAR1(C),XS(g)
  - S(g);N_GUARD::QAR1(C)
  - P(a);OGATE::QAR1(C)

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).