MESON Chess Problem Database
Problem Display
PID: 64788 (2b1Q3/3p1p2/5p1P/2P1NkpK/1b4R1/r3R3/2q1P3/nB3N1n w - - 0 1)
Koldijk, Albert Marinus
Probleemblad, 1982
#2
10 + 11
| 102 | Probleemblad | 2005 |
| 102 | Probleemblad | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Rf3#
- 1...Qe4
- 2.Bxe4#
- 1...Ra2
- 2.Rf3#
- 1...Rxe3
- 2.Sxe3#
- 1...Ra4
- 2.Rf3#
- 1...Ra5
- 2.Rf3#
- 1...Ra6
- 2.Rf3#
- 1...Ra7
- 2.Rf3#
- 1...Ra8
- 2.Rf3#
- 1...Bc3
- 2.Rf3#
- 1...Ba6
- 2.Qxd7#
- 1...Bb7
- 2.Qxd7#
- 1...Sb3
- 2.Bxc2#
- 2.Rf3#
- 1...Sf2
- 2.Sg3#
- 1...Sg3+
- 2.Sxg3#
- 1...fxe5
- 2.Qxf7#
- 2.Qxe5#
- 1...d5
- 2.Qxc8#
- 1...d6
- 2.Qxc8#
- 1...Qd3
- Tries
- 1.Sd3?
- threat
- 2.Rf3#
- 2.Qe4#
- 1...Sg3+
- 2.Sxg3#
- 1...Qxd3
- 2.Rf3#
- 1...Qxe2
- 2.Qe4#
- 1...Rxd3
- 2.Qe4#
- 1...Qc1
- 2.Qe4#
- 1...Qd2
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Bb7
- 2.Qxd7#
- 1...Sf2
- 2.Sg3#
- 2.Rf3#
- 1...d5
- 2.Rf3#
- 2.Qxc8#
- 1...Qc4!
- threat
- 1.Sc4?
- threat
- 2.Sd6#
- 1...Sg3+
- 2.Sxg3#
- 1...Rd3
- 2.Qe4#
- 1...Ra6
- 2.Rf3#
- 1...d6
- 2.Sxd6#
- 2.Qxc8#
- 1...Bxc5!
- threat
- 1.Sc6?
- threat
- 2.Sd4#
- 2.Se7#
- 1...Sg3+
- 2.Sxg3#
- 1...Rxe3
- 2.Sxe3#
- 2.Sd4#
- 1...dxc6
- 2.Qxc8#
- 1...Qe4
- 2.Sd4#
- 2.Bxe4#
- 2.Qxe4#
- 1...Rd3
- 2.Se7#
- 2.Qe4#
- 1...Bc3
- 2.Se7#
- 2.Rf3#
- 1...Sb3
- 2.Se7#
- 2.Bxc2#
- 2.Rf3#
- 1...Bxc5!
- threat
- 1.Sg6?
- threat
- 2.Se7#
- 1...Sg3+
- 2.Sxg3#
- 1...fxg6+
- 2.Qxg6#
- 1...Rxe3
- 2.Sxe3#
- 1...Qe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Bxc5!
- threat
- 1.Sxf7?
- threat
- 2.Sd6#
- 1...Sg3+
- 2.Sxg3#
- 1...Rd3
- 2.Qe4#
- 1...Ra6
- 2.Rf3#
- 1...d6
- 2.Sxd6#
- 2.Qxc8#
- 1...Bxc5!
- threat
- 1.Bxc2+?
- 1...Rd3
- 2.Bxd3#
- 2.Rf3#
- 1...Sxc2!
- 1...Rd3
- 1.Rxa3?
- threat
- 2.Se3#
- 2.Rf3#
- 1...Sg3+
- 2.Sxg3#
- 1...Bxa3
- 2.Se3#
- 1...Bxc5
- 2.Rf3#
- 1...fxe5
- 2.Rf3#
- 2.Qxf7#
- 1...Qd3
- 2.Se3#
- 2.Bxd3#
- 1...Bc3
- 2.Se3#
- 1...Bb7
- 2.Se3#
- 1...Sb3
- 2.Se3#
- 2.Bxc2#
- 1...Bd2!
- threat
- 1.Rxg5+?
- 1...fxg5
- 2.Qxf7#
- 1...Kf4!
- 1...fxg5
- 1.Sd3?
- Keys
- 1.Rd3!
- threat
- 2.Se3#
- 2.e4#
- 1...Sg3+
- 2.Sxg3#
- 1...Qxd3
- 2.Se3#
- 1...Qxe2
- 2.Rf3#
- 1...Qxc5
- 2.Rf3#
- 2.e4#
- 1...Rxd3
- 2.e4#
- 1...Bxc5
- 2.e4#
- 1...fxe5
- 2.Qxf7#
- 1...Qc1
- 2.Rf3#
- 2.e4#
- 1...Qd2
- 2.Rf3#
- 2.e4#
- 1...Qc4
- 2.Se3#
- 2.Rf3#
- 1...Bd2
- 2.e4#
- 1...Bb7
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 2.Sg3#
- 1...d5
- 2.Se3#
- threat
- 1.Rd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 5
- REMOVED MATES = 12
- Sets
- Q(c);S_CUTR(d)::R(D)
- Q(c);OGATE::B(A),XQ(c)
- R(d);N_GUARD::R(D)
- R(d);XR(D)::S(B),XR(d)
- B(e);S_CUTR(d)::R(D)
- B(k);N_GUARD::QAB(J),XP(i)
- S(b);N_GUARD::S(B)
- S(b);CHECK,N_GUARD::S(B),XS(b)
- P(i);OGATEB::QAB(J),XB(k)
- Tries
- Try
- S(G);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- Q(c);P_SPINQ(c),XS(G)::R(D)
- Q(c);P_PINR(E),XP(C)::QAB1(J)
- R(d);XS(G)::QAB1(J)
- Q(c);::QAB1(J)
- B(e);::QAB1(J)
- B(k);N_GUARD::QAB(J),XP(i)
- Refutation
- Q(c);
- Try
- S(G);
- Threat
- S(G)
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- R(d);N_SPINQ(c),S_CUTQ(c)::QAB1(J)
- R(d);N_GUARD::R(D)
- Refutation
- B(e);XP(F)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- P(i);OGATEB,XS(G)::QAB(J),XB(k)
- Refutation
- B(e);XP(F)
- Try
- S(G);
- Threat
- S(G)
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- P(j);CHECK,OGATE,XS(G)::QAB1(J),XP(j)
- R(d);XR(D)::S(B),XR(d)
- Refutation
- B(e);XP(F)
- Try
- S(G);XP(j)
- Threat
- S(G)
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- R(d);N_SPINQ(c),S_CUTQ(c)::QAB1(J)
- R(d);N_GUARD::R(D)
- Refutation
- B(e);XP(F)
- Try
- B(A);CHECK,XQ(c)
- Refutation
- S(a);XB(A)
- Try
- R(D);XR(d)
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- B(e);XR(D)::S(B)
- B(e);XP(F)::R(D)
- B(e);::S(B)
- B(k);::S(B)
- Refutation
- B(e);
- Try
- R(E);CHECK,XP(g)
- Vars
- P(h);XR(E)::QAR2(J),XP(j)
- Refutation
- K(f);N_SPINQ(c),P-FLIGHT
- Try
- Actual
- R(D);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- Q(c);P_SPINQ(c),XR(D)::S(B)
- Q(c);P_PINR(E),XP(C)::B(A)+R(D),DCHECK
- R(d);XR(D)::P(C)
- B(e);XP(F)::P(C)
- P(h);OGATEB,SBLOCK,XS(G)::QAR2(J),XP(j)
- B(e);::P(C)
- B(k);::S(B)
- P(i);::S(B)
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).