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Problem Display

PID: 95732 (8/3K1p2/5Pp1/5nR1/pN1kN3/P2B2P1/6P1/4B3 w - - 0 1)

Hartong, Jan

Niemeijer, Meindert

L'Italia Scacchistica, 1950

8/3K1p2/5Pp1/5nR1/pN1kN3/P2B2P1/6P1/4B3

#2

10 + 5

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Ke3
  - 2.Bf2#
- 1...Ke5
  - 2.Bc3#
- 1...Se3
  - 2.Bc3#
- 1...Sxg3
  - 2.Bf2#
- 1...Sh4
  - 2.Bf2#
- 1...Sd6
  - 2.Bf2#
- 1...Sh6
  - 2.Bf2#
- 1...Se7
  - 2.Bf2#
- 1...Sg7
  - 2.Bf2#
Tries
- 1.Kc7?
  - 1...Ke3
    - 2.Bf2#
  - 1...Sxg3
    - 2.Bf2#
  - 1...Se3
    - 2.Bc3#
  - 1...Sh4
    - 2.Bf2#
  - 1...Sd6
    - 2.Bf2#
  - 1...Sh6
    - 2.Bf2#
  - 1...Se7
    - 2.Bf2#
  - 1...Sg7
    - 2.Bf2#
  - 1...Ke5!
- 1.Kd8?
  - 1...Ke3
    - 2.Bf2#
  - 1...Sxg3
    - 2.Bf2#
  - 1...Se3
    - 2.Bc3#
  - 1...Sh4
    - 2.Bf2#
  - 1...Sd6
    - 2.Bf2#
  - 1...Sh6
    - 2.Bf2#
  - 1...Se7
    - 2.Bf2#
  - 1...Sg7
    - 2.Bf2#
  - 1...Ke5!
- 1.Sf2?
  - 1...Ke3
    - 2.Sc2#
  - 1...Ke5
    - 2.Bc3#
  - 1...Sxg3
    - 2.Sc2#
  - 1...Se3
    - 2.Sc6#
  - 1...Sh4
    - 2.Sc2#
  - 1...Sd6
    - 2.Sc2#
  - 1...Sh6
    - 2.Sc2#
  - 1...Se7
    - 2.Sc2#
  - 1...Sg7
    - 2.Sc2#
  - 1...Kc5!
- 1.Bd2?
  - 1...Ke5
    - 2.Bc3#
  - 1...Sxg3
    - 2.Rd5#
  - 1...Se3
    - 2.Bc3#
  - 1...Sh4
    - 2.Rd5#
  - 1...Sd6
    - 2.Rd5#
  - 1...Sh6
    - 2.Rd5#
  - 1...Sg7
    - 2.Rd5#
  - 1...Se7!
- 1.Bf2+?
  - 1...Se3
    - 2.Rd5#
  - 1...Ke5!
- 1.Rxf5?
  - threat
    - 2.Bf2#
  - 1...Ke3
    - 2.Bf2#
  - 1...gxf5!
Keys
- 1.Sc5!
  - 1...Ke3
    - 2.Sc2#
  - 1...Kxc5
    - 2.Bf2#
  - 1...Ke5
    - 2.Bc3#
  - 1...Sxg3
    - 2.Sc2#
  - 1...Se3
    - 2.Sc6#
  - 1...Sh4
    - 2.Sc2#
  - 1...Sd6
    - 2.Sc2#
  - 1...Sh6
    - 2.Sc2#
  - 1...Se7
    - 2.Sc2#
  - 1...Sg7
    - 2.Sc2#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- K(b);S_FLIGHT::B(A)
- K(b);P_SPINS(c),S_FLIGHT::B(A)
- S(c);SBLOCK::B(A)
- S(c);N_GUARD,XP(E)::B(A)
- S(c);N_GUARD::B(A)
Tries
- Try
  - K(J);P-FLIGHT
  - Vars
    - K(b);S_FLIGHT::B(A)
    - S(c);N_GUARD,XP(E)::B(A)
    - S(c);SBLOCK::B(A)
    - S(c);N_GUARD::B(A)
  - Refutation
    - K(b);P_SPINS(c),S_FLIGHT
- Try
  - K(J);P-FLIGHT
  - Vars
    - K(b);S_FLIGHT::B(A)
    - S(c);N_GUARD,XP(E)::B(A)
    - S(c);SBLOCK::B(A)
    - S(c);N_GUARD::B(A)
  - Refutation
    - K(b);P_SPINS(c),S_FLIGHT
- Try
  - S(G);
  - Vars
    - K(b);S_FLIGHT::S(F)
    - K(b);P_SPINS(c),S_FLIGHT::B(A)
    - S(c);XP(E)::S(F)
    - S(c);SBLOCK::S(F)
    - S(c);::S(F)
  - Refutation
    - K(b);P_SPINS(c),S_FLIGHT
- Try
  - B(A);
  - Vars
    - K(b);P_SPINS(c),S_FLIGHT::B(A)
    - S(c);OGATE,XP(E)::R1(H)
    - S(c);SBLOCK::B(A)
    - S(c);OGATE::R1(H)
  - Refutation
    - S(c);
- Try
  - B(A);CHECK
  - Vars
    - S(c);OGATE,P_SPINS(c)::R1(H)
  - Refutation
    - K(b);P_SPINS(c),S_FLIGHT
- Try
  - R(H);XS(c)
  - Threat
    - B(A)
  - Vars
    - K(b);S_FLIGHT::B(A)
  - Refutation
    - P(d);XR(H)
Actual
- S(G);
- Vars
  - K(b);S_FLIGHT::S(F)
  - K(b);P_SPINS(c),S_FLIGHT,XS(G)::B(A)
  - K(b);P_SPINS(c),S_FLIGHT::B(A)
  - S(c);XP(E)::S(F)
  - S(c);SBLOCK::S(F)
  - S(c);::S(F)

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).