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Problem Display

PID: 232701 (8/8/8/6p1/8/1B1b1Qp1/1K1kpnR1/2R4n w - - 0 1)

Frohlich, Georg

Freie Presse, 1973

8/8/8/6p1/8/1B1b1Qp1/1K1kpnR1/2R4n

#2

5 + 7

15148	Sadier Collection	2021

SOLUTION

SOUND
Sets
- 1...Bb1
  - 2.Qc3#
- 1...Bc2
  - 2.Qc3#
- 1...Bc4
  - 2.Qc3#
- 1...Be4
  - 2.Qc3#
- 1...Bb5
  - 2.Qc3#
- 1...Bf5
  - 2.Qc3#
- 1...Ba6
  - 2.Qc3#
- 1...Bg6
  - 2.Qc3#
- 1...Bh7
  - 2.Qc3#
- 1...Sd1+
  - 2.Rxd1#
- 1...Sh3
  - 2.Rd1#
- 1...Se4
  - 2.Rd1#
- 1...Sg4
  - 2.Rd1#
- 1...e1S
  - 2.Rd1#
- 1...e1B
  - 2.Rd1#
- 1...g4
  - 2.Qf4#
Tries
- 1.Bc4?
  - 1...Bxc4
    - 2.Qc3#
  - 1...e1Q
    - 2.Qxd3#
  - 1...e1S
    - 2.Rd1#
  - 1...e1B
    - 2.Rd1#
    - 2.Qxd3#
  - 1...e1R
    - 2.Qxd3#
  - 1...Bb1
    - 2.Qxe2#
    - 2.Qc3#
  - 1...Bc2
    - 2.Qxe2#
    - 2.Qc3#
  - 1...Be4
    - 2.Qxe2#
    - 2.Qc3#
  - 1...Bf5
    - 2.Qxe2#
    - 2.Qc3#
  - 1...Bg6
    - 2.Qxe2#
    - 2.Qc3#
  - 1...Bh7
    - 2.Qxe2#
    - 2.Qc3#
  - 1...Sh3
    - 2.Qxd3#
  - 1...Se4
    - 2.Qxd3#
  - 1...Sg4
    - 2.Qxd3#
  - 1...g4
    - 2.Qf4#
  - 1...Sd1+!
- 1.Rc2+?
  - 1...Kd1
    - 2.Rg1#
  - 1...Ke1
    - 2.Rg1#
  - 1...Bxc2!
Keys
- 1.Bc2!
  - 1...Sd1+
    - 2.Rxd1#
  - 1...Bxc2
    - 2.Qc3#
  - 1...e1Q
    - 2.Qxd3#
  - 1...e1S
    - 2.Rd1#
  - 1...e1B
    - 2.Rd1#
    - 2.Qxd3#
  - 1...e1R
    - 2.Qxd3#
  - 1...Bc4
    - 2.Qc3#
  - 1...Be4
    - 2.Qc3#
  - 1...Bb5
    - 2.Qc3#
  - 1...Bf5
    - 2.Qc3#
  - 1...Ba6
    - 2.Qc3#
  - 1...Bg6
    - 2.Qc3#
  - 1...Bh7
    - 2.Qc3#
  - 1...Sh3
    - 2.Rd1#
    - 2.Qxd3#
  - 1...Se4
    - 2.Rd1#
    - 2.Qxd3#
  - 1...Sg4
    - 2.Rd1#
    - 2.Qxd3#
  - 1...g4
    - 2.Qf4#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
Sets
- B(e);OGATE::QAB1(E)
- S(d);CHECK,N_GUARD,P_SPINP(c)::R1(A),XS(d)
- S(d);N_GUARD,P_SPINP(c)::R1(A)
- P(c);N_GUARD,P_SPINS(d)::R1(A)
- P(g);N_GUARD::QAB(E)
Tries
- Try
  - B(D);
  - Vars
    - B(e);OGATE,XB(D)::QAB1(E)
    - P(c);P_SPINS(d)::QAR1(E),XB(e)
    - P(c);N_GUARD,P_SPINS(d)::R1(A)
    - S(d);N_GUARD,P_SPINP(c)::QAR1(E),XB(e)
    - P(g);N_GUARD::QAB(E)
  - Refutation
    - S(d);CHECK,P_SPINP(c)
- Try
  - R(A);CHECK
  - Vars
    - K(b);P-FLIGHT,P_SPINP(c)::R(C)
    - K(b);S_FLIGHT::R(C)
  - Refutation
    - B(e);XR(A)
Actual
- B(D);
- Vars
  - S(d);CHECK,N_GUARD,P_SPINP(c)::R1(A),XS(d)
  - B(e);OGATE,XB(D)::QAB1(E)
  - P(c);P_SPINS(d)::QAR1(E),XB(e)
  - P(c);N_GUARD,P_SPINS(d)::R1(A)
  - B(e);OGATE::QAB1(E)
  - P(g);N_GUARD::QAB(E)

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).