MESON Chess Problem Database
Problem Display
PID: 245894 (3k1KQ1/R3ppp1/Bp6/3N4/4p3/3N4/3Rp2b/5rq1 w - - 0 1)
Haring, Jacobus
Comm., Europa-Rochade, 1984
#2
7 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Kxg7#
- 1...Qe3
- 2.Kxg7#
- 1...Qc5
- 2.Kxg7#
- 1...Qh1
- 2.Kxg7#
- 1...Ra1
- 2.Kxf7#
- 1...Rb1
- 2.Kxf7#
- 1...Rc1
- 2.Kxf7#
- 1...Rd1
- 2.Kxf7#
- 1...Re1
- 2.Kxf7#
- 1...Bg3
- 2.Kxg7#
- 1...Bf4
- 2.Kxf7#
- 1...f5
- 2.Kf7#
- 1...f6
- 2.Kf7#
- 1...g5
- 2.Kg7#
- 1...g6
- 2.Kg7#
- 1...Qf2
- Tries
- 1.Sf2?
- threat
- 2.Kxf7#
- 2.Sf4#
- 1...Qxf2
- 2.Kxg7#
- 1...Rxf2
- 2.Sf4#
- 1...Bc7
- 2.Sxc7#
- 1...e1Q
- 2.Kxf7#
- 1...e1S
- 2.Kxf7#
- 1...e1B
- 2.Kxf7#
- 1...Qg3
- 2.Kxf7#
- 1...Qg4
- 2.Kxf7#
- 1...Qg5
- 2.Kxf7#
- 1...Rd1
- 2.Kxf7#
- 1...Bf4
- 2.Kxf7#
- 2.Sxf4#
- 1...Be5
- 2.Kxf7#
- 1...Bd6
- 2.Kxf7#
- 1...Bb8
- 2.Kxf7#
- 2.Sc7#
- 1...e3
- 2.Kxf7#
- 1...f5
- 2.Kf7#
- 2.Sf4#
- 1...f6
- 2.Kf7#
- 2.Sf4#
- 1...Qg6!
- threat
- 1.Se5?
- threat
- 2.Se3#
- 2.Sc6#
- 2.Rd7#
- 2.Ra8#
- 1...e1Q
- 2.Sc6#
- 2.Rd7#
- 2.Ra8#
- 1...e1S
- 2.Sc6#
- 2.Rd7#
- 2.Ra8#
- 1...e1B
- 2.Sc6#
- 2.Rd7#
- 2.Ra8#
- 1...Qe3
- 2.Kxg7#
- 2.Sxe3#
- 2.Sc6#
- 2.Rd7#
- 2.Ra8#
- 1...Qd4
- 2.Kxg7#
- 2.Sc6#
- 2.Rd7#
- 2.Ra8#
- 1...Qc5
- 2.Kxg7#
- 2.Rd7#
- 1...Qg4
- 2.Sc6#
- 1...Qg6
- 2.Sf6#
- 2.Rd7#
- 2.Ra8#
- 1...Rc1
- 2.Kxf7#
- 2.Se3#
- 2.Sxf7#
- 2.Rd7#
- 1...Rd1
- 2.Kxf7#
- 2.Sc6#
- 2.Sxf7#
- 2.Rd7#
- 2.Ra8#
- 1...Rf6
- 2.Rd7#
- 2.Ra8#
- 1...e3
- 2.Sxe3#
- 2.Sc6#
- 2.Rd7#
- 2.Ra8#
- 1...Bxe5!
- threat
- 1.S5f4?
- threat
- 2.Kxf7#
- 2.Sf2#
- 1...Rxf4
- 2.Sf2#
- 1...Bxf4
- 2.Kxf7#
- 1...exd3
- 2.Kxf7#
- 1...e1Q
- 2.Kxf7#
- 1...e1S
- 2.Kxf7#
- 1...e1B
- 2.Kxf7#
- 1...Qf2
- 2.Kxf7#
- 2.Kxg7#
- 2.Sxf2#
- 1...Qe3
- 2.Kxf7#
- 2.Kxg7#
- 1...Qd4
- 2.Kxf7#
- 1...Qc5
- 2.Kxf7#
- 2.Kxg7#
- 2.Sxc5#
- 1...Qg3
- 2.Kxf7#
- 1...Qg4
- 2.Kxf7#
- 1...Qg5
- 2.Kxf7#
- 2.Se5#
- 1...Rd1
- 2.Kxf7#
- 1...Rf2
- 2.Kxf7#
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sxf2#
- 2.Sb4#
- 2.Sc5#
- 2.Se5#
- 1...Rf3
- 2.Kxf7#
- 1...e3
- 2.Kxf7#
- 1...f5
- 2.Kf7#
- 2.Sf2#
- 2.Se6#
- 2.Qd5#
- 1...f6
- 2.Kf7#
- 2.Sf2#
- 2.Se6#
- 2.Qd5#
- 1...Qg6!
- threat
- 1.Sf2?
- Keys
- 1.S3f4!
- threat
- 2.Kxf7#
- 2.Se3#
- 1...Rxf4
- 2.Se3#
- 1...Bxf4
- 2.Kxf7#
- 1...e1Q
- 2.Kxf7#
- 1...e1S
- 2.Kxf7#
- 1...e1B
- 2.Kxf7#
- 1...Qe3
- 2.Kxf7#
- 2.Kxg7#
- 2.Sxe3#
- 1...Qd4
- 2.Kxf7#
- 1...Qc5
- 2.Kxf7#
- 2.Kxg7#
- 1...Qg4
- 2.Kxf7#
- 1...Qg5
- 2.Kxf7#
- 1...Qg6
- 2.Sf6#
- 1...Rd1
- 2.Kxf7#
- 1...e3
- 2.Kxf7#
- 2.Sxe3#
- 1...f5
- 2.Kf7#
- 2.Se6#
- 2.Se3#
- 1...f6
- 2.Kf7#
- 2.Se6#
- 2.Se3#
- threat
- 1.S3f4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 13
- Sets
- Q(b);::QAR(G)+K(F),XP(i)
- R(a);::QAR(G)+K(F),XP(h)
- B(d);::QAR(G)+K(F),XP(i)
- B(d);::QAR(G)+K(F),XP(h)
- P(h);::QAR(G)+K(F)
- P(i);::QAR(G)+K(F)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(b);XS(B)::QAR(G)+K(F),XP(i)
- R(a);XS(B)::R(A)+S(C)
- B(d);N_GUARD::R(A)+S(C),XB(d)
- P(c);::QAR(G)+K(F),XP(h)
- Q(b);::QAR(G)+K(F),XP(h)
- R(a);::QAR(G)+K(F),XP(h)
- B(d);::QAR(G)+K(F),XP(h)
- P(e);::QAR(G)+K(F),XP(h)
- Refutation
- Q(b);
- Try
- S(B);
- Threat
- DUALS(4)
- Vars
- Q(b);::S(B)
- Refutation
- B(d);XS(B)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(a);XS(C)::R(A)+S(B)
- B(d);XS(C)::QAR(G)+K(F),XP(h)
- P(e);P_SPINP(e),XS(B)::QAR(G)+K(F),XP(h)
- P(c);::QAR(G)+K(F),XP(h)
- Q(b);::QAR(G)+K(F),XP(h)
- R(a);::QAR(G)+K(F),XP(h)
- P(e);::QAR(G)+K(F),XP(h)
- Refutation
- Q(b);
- Try
- Actual
- S(B);
- Threat
- DUALS(2)
- Vars
- R(a);XS(B)::R(A)+S(C)
- B(d);XS(B)::QAR(G)+K(F),XP(h)
- P(c);::QAR(G)+K(F),XP(h)
- Q(b);::QAR(G)+K(F),XP(h)
- Q(b);N_GUARD::R(A)+S(C)
- R(a);::QAR(G)+K(F),XP(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).