MESON Chess Problem Database
Problem Display
PID: 237678 (5R2/4nBn1/8/2p5/2K2p1R/4NkN1/3P4/4B3 w - - 0 1)
Retter, Yosef
Variantim, 2019
#2
8 + 5
SOLUTION
- SOUND
- Sets
- 1...Sd5
- 2.Bxd5#
- 1...Sef5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se6
- 2.Bh5#
- 1...Se8
- 2.Bh5#
- 1...fxe3
- 2.Bd5#
- 1...fxg3
- 2.Bh5#
- 1...Sd5
- Tries
- 1.Kb3?
- 1...fxe3
- 2.Bd5#
- 1...fxg3
- 2.Bh5#
- 1...Sd5
- 2.Bxd5#
- 1...Sef5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se6
- 2.Bh5#
- 1...Se8
- 2.Bh5#
- 1...c4+!
- 1...fxe3
- 1.Kc3?
- 1...Sd5+
- 2.Bxd5#
- 1...fxe3
- 2.Bd5#
- 1...fxg3
- 2.Bh5#
- 1...Sef5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se6
- 2.Bh5#
- 1...Se8
- 2.Bh5#
- 1...c4!
- 1...Sd5+
- 1.Kd3?
- 1...fxe3
- 2.Bd5#
- 1...fxg3
- 2.Bd5#
- 2.Bh5#
- 1...Sd5
- 2.Bxd5#
- 1...Sef5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se6
- 2.Bh5#
- 1...Se8
- 2.Bh5#
- 1...c4+!
- 1...fxe3
- 1.Kb5?
- 1...fxe3
- 2.Bd5#
- 1...fxg3
- 2.Bh5#
- 1...Sd5
- 2.Bxd5#
- 1...Sef5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se6
- 2.Bh5#
- 1...Se8
- 2.Bh5#
- 1...c4!
- 1...fxe3
- 1.Kxc5?
- 1...fxe3
- 2.Bd5#
- 1...fxg3
- 2.Bh5#
- 1...Sd5
- 2.Bxd5#
- 1...Sef5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se8
- 2.Bh5#
- 1...Se6+!
- 1...fxe3
- 1.Be8?
- threat
- 2.Rhxf4#
- 2.Rfxf4#
- 1...Sef5
- 2.Bc6#
- 1...Sg6
- 2.Bc6#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se6
- 2.Bh5#
- 1...Sd5!
- threat
- 1.Kb3?
- Keys
- 1.Rh2!
- 1...fxe3
- 2.Bh5#
- 1...fxg3
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sef5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...Sgf5
- 2.Bh5#
- 1...Sh5
- 2.Bxh5#
- 1...Se6
- 2.Bh5#
- 1...Se8
- 2.Bh5#
- 1...fxe3
- 1.Rh2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::B(G),XS(d)
- S(d);N_GUARD::B(G)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- P(b);XS(C)::R(H)+B(G),DCHECK
- P(b);XS(D)::R(H)+B(G),DCHECK
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- P(b);XS(C)::R(H)+B(G),DCHECK
- P(b);XS(D)::R(H)+B(G),DCHECK
- S(d);N_GUARD::B(G),XS(d)
- S(d);N_GUARD::B(G)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- Refutation
- P(c);CHECK
- Try
- K(E);P-FLIGHT
- Vars
- S(d);CHECK,N_GUARD::B(G),XS(d)
- P(b);XS(C)::R(H)+B(G),DCHECK
- P(b);XS(D)::R(H)+B(G),DCHECK
- S(d);N_GUARD::B(G)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- Refutation
- P(c);
- Try
- K(E);S_FLIGHT
- Vars
- P(b);XS(C)::R(H)+B(G),DCHECK
- S(d);N_GUARD::B(G),XS(d)
- S(d);N_GUARD::B(G)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- Refutation
- P(c);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- P(b);XS(C)::R(H)+B(G),DCHECK
- P(b);XS(D)::R(H)+B(G),DCHECK
- S(d);N_GUARD::B(G),XS(d)
- S(d);N_GUARD::B(G)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- Refutation
- P(c);
- Try
- K(E);P-FLIGHT,XP(c)
- Vars
- P(b);XS(C)::R(H)+B(G),DCHECK
- P(b);XS(D)::R(H)+B(G),DCHECK
- S(d);N_GUARD::B(G),XS(d)
- S(d);N_GUARD::B(G)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- Refutation
- S(e);CHECK
- Try
- B(G);P_PINP(b)
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,N_SPINP(b)::B(G)
- S(d);N_GUARD::B(G)
- S(e);N_GUARD,N_SPINP(b)::B(G)
- S(e);N_GUARD::B(G),XS(e)
- S(e);N_GUARD::B(G)
- Refutation
- S(d);
- Try
- Actual
- R(F);
- Vars
- P(b);XS(C)::R(H)+B(G),DCHECK
- P(b);XS(D)::R(H)+B(G),DCHECK
- S(d);N_GUARD::B(G),XS(d)
- S(d);N_GUARD::B(G)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(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).