MESON Chess Problem Database
Problem Display
PID: 264139 (3N4/p3r1p1/K1R1p1B1/3Nkp2/8/3QP3/4n3/8 w - - 0 1)
Beszczynski, Jan
Tijdschrift vd KNSB, 1956
#2
7 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rb7
- 2.Rxe6#
- 1...Rc7
- 2.Rxe6#
- 1...Rd7
- 2.Rxe6#
- 1...Rf7
- 2.Sxf7#
- 2.Rxe6#
- 1...Re8
- 2.Sf7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qd4#
- 2.exf4#
- 1...f4
- 2.Qe4#
- 1...exd5
- 2.Qxf5#
- 1...Rb7
- Tries
- 1.Ka5?
- 1...exd5
- 2.Qxf5#
- 1...Sd4
- 2.Qxd4#
- 1...Rb7
- 2.Rxe6#
- 1...Rc7
- 2.Rxe6#
- 1...Rd7
- 2.Rxe6#
- 1...Rf7
- 2.Sxf7#
- 2.Rxe6#
- 1...Re8
- 2.Sf7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 2.exf4#
- 1...f4
- 2.Qe4#
- 1...a6!
- 1...exd5
- 1.Sf4?
- 1...Kf6
- 2.Qxf5#
- 1...Sxf4
- 2.Qd4#
- 1...Rb7
- 2.Rxe6#
- 1...Rc7
- 2.Rxe6#
- 1...Rd7
- 2.Rxe6#
- 1...Rf7
- 2.Rxe6#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Re8!
- 1...Kf6
- 1.Sxe7?
- threat
- 2.Rxe6#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qd4#
- 1...Kf6!
- threat
- 1.Sxe6?
- threat
- 2.Qxf5#
- 1...Sd4
- 2.Qxd4#
- 1...Sg3
- 2.Qd4#
- 1...f4
- 2.Qe4#
- 2.Qf5#
- 1...Rf7!
- threat
- 1.Rb6?
- 1...exd5
- 2.Qxf5#
- 1...Sd4
- 2.Qxd4#
- 1...f4
- 2.Qe4#
- 1...Rb7
- 2.Rxe6#
- 1...Rc7
- 2.Rxe6#
- 1...Rd7
- 2.Rxe6#
- 1...Rf7
- 2.Sxf7#
- 2.Rxe6#
- 1...Re8
- 2.Sf7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 2.exf4#
- 1...axb6!
- 1...exd5
- 1.Qc4?
- 1...Sd4
- 2.Qxd4#
- 1...f4
- 2.Qe4#
- 1...Rb7
- 2.Rxe6#
- 1...Rc7
- 2.Rxe6#
- 1...Rd7
- 2.Rxe6#
- 1...Rf7
- 2.Sxf7#
- 2.Rxe6#
- 1...Re8
- 2.Sf7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 2.exf4#
- 1...exd5!
- 1...Sd4
- 1.Ka5?
- Keys
- 1.Sf6!
- 1...Kxf6
- 2.Qxf5#
- 1...gxf6
- 2.Rc5#
- 1...Re8
- 2.Sd7#
- 1...Rb7
- 2.Rxe6#
- 1...Rc7
- 2.Rxe6#
- 1...Rd7
- 2.Sxd7#
- 2.Rxe6#
- 1...Rf7
- 2.Rxe6#
- 1...Sc1
- 2.Qc3#
- 2.Qd4#
- 1...Sg1
- 2.Qc3#
- 2.Qd4#
- 1...Sc3
- 2.Qxc3#
- 2.Qd4#
- 1...Sg3
- 2.Qc3#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qc3#
- 2.Qd4#
- 1...f4
- 2.Sg4#
- 1...Kxf6
- 1.Sf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(f);N_GUARD::R1(E),XP(d)
- R(f);N_GUARD::S(G)
- S(a);N_GUARD::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- P(c);N_GUARD::QAR1(A)
- P(d);N_GUARD,SBLOCK,XS(C)::QAR1(A),XP(c)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- P(d);N_GUARD,SBLOCK,XS(C)::QAR1(A),XP(c)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(f);N_GUARD::R1(E),XP(d)
- R(f);N_GUARD::S(G)
- S(a);N_GUARD::QAB1(A)
- P(c);N_GUARD::QAR1(A)
- Refutation
- P(e);
- Try
- S(C);
- Vars
- K(b);P_SPINP(d),S_FLIGHT::QAR1(A),XP(c)
- S(a);N_GUARD,XS(C)::QAB1(A)
- R(f);N_GUARD::R1(E),XP(d)
- S(a);N_GUARD::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- Refutation
- R(f);
- Try
- S(C);XR(f)
- Threat
- R1(E),XP(d)
- Vars
- S(a);N_GUARD::QAB1(A),XS(a)
- S(a);N_GUARD::QAB1(A)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- S(G);XP(d)
- Threat
- QAR1(A),XP(c)
- Vars
- S(a);N_GUARD::QAB1(A),XS(a)
- S(a);N_GUARD::QAB1(A)
- Refutation
- R(f);
- Try
- R(E);
- Vars
- P(d);N_GUARD,SBLOCK,XS(C)::QAR1(A),XP(c)
- S(a);N_GUARD::QAB1(A),XS(a)
- P(c);N_GUARD::QAR1(A)
- R(f);N_GUARD::R1(E),XP(d)
- R(f);N_GUARD::S(G)
- S(a);N_GUARD::QAB1(A)
- Refutation
- P(e);XR(E)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAB1(A),XS(a)
- P(c);N_GUARD::QAR1(A)
- R(f);N_GUARD::R1(E),XP(d)
- R(f);N_GUARD::S(G)
- S(a);N_GUARD::QAB1(A)
- Refutation
- P(d);XS(C)
- Try
- Actual
- S(C);
- Vars
- K(b);P_SPINP(d),S_FLIGHT,XS(C)::QAR1(A),XP(c)
- P(g);SBLOCK,XS(C)::R(E)
- R(f);N_GUARD::S(C)
- R(f);N_GUARD::R1(E),XP(d)
- S(a);N_GUARD::QAB1(A),XS(a)
- P(c);N_GUARD::S(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).