MESON Chess Problem Database
Problem Display
PID: 5963 (2n5/2nN4/1p4p1/1P3pP1/1Qp1pk2/1pNp2RR/1K4P1/8 w - - 0 1)
van Dijk, Johannes
HM., BCPS, 1926
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Sxb5
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...d2
- 2.Se2#
- 1...e3
- 2.Qxc4#
- 1...Sxb5
- Tries
- 1.Ka1?
- 1...Sxb5
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...d2
- 2.Se2#
- 1...e3
- 2.Qxc4#
- 1...b2+!
- 1...Sxb5
- 1.Kb1?
- 1...Sxb5
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...d2
- 2.Se2#
- 1...e3
- 2.Qxc4#
- 1...b2!
- 1...Sxb5
- 1.Sf8?
- threat
- 2.Sxg6#
- 1...Se7
- 2.Qd6#
- 1...Ke5!
- threat
- 1.Qa3?
- 1...Sxb5
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...d2
- 2.Se2#
- 1...e3!
- 1...Sxb5
- 1.Qc5?
- threat
- 2.Qf2#
- 2.Qe3#
- 2.Qe5#
- 1...Sd5
- 2.Sxd5#
- 2.Qf2#
- 1...e3
- 2.Qxe3#
- 2.Qd4#
- 2.Qxc4#
- 2.Qe5#
- 1...bxc5!
- threat
- 1.Qe7?
- threat
- 2.Qe5#
- 1...Se6
- 2.Sd5#
- 1...Sxe7!
- threat
- 1.Qxc4?
- 1...Sxb5
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Sa7
- 2.Qxc7#
- 1...Se7
- 2.Qxc7#
- 1...d2
- 2.Se2#
- 2.Qf1#
- 1...Sd6!
- 1...Sxb5
- 1.Ka1?
- Keys
- 1.Sxe4!
- threat
- 2.Rh4#
- 1...c3+
- 2.Sxc3#
- 1...Kxe4
- 2.Qxc4#
- 1...fxe4
- 2.Qf8#
- threat
- 1.Sxe4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- S(i);N_GUARD,XP(G)::S(C)
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- S(j);N_GUARD::QAB(F),XS(j)
- S(j);N_GUARD::QAB(F)
- P(b);N_GUARD::S(C)
- P(d);OGATEB,P_SPINP(c)::QAR(F),XP(c)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- S(i);N_GUARD,XP(G)::S(C)
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- S(j);N_GUARD::QAB(F),XS(j)
- S(j);N_GUARD::QAB(F)
- P(b);N_GUARD::S(C)
- P(d);OGATEB,P_SPINP(c)::QAR(F),XP(c)
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- S(i);N_GUARD,XP(G)::S(C)
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- S(j);N_GUARD::QAB(F),XS(j)
- S(j);N_GUARD::QAB(F)
- P(b);N_GUARD::S(C)
- P(d);OGATEB,P_SPINP(c)::QAR(F),XP(c)
- Refutation
- P(a);
- Try
- S(I);
- Threat
- S(I),XP(h)
- Vars
- S(j);N_GUARD::QAB(F)
- Refutation
- K(e);S_FLIGHT
- Try
- Q(F);
- Vars
- S(i);N_GUARD,XP(G)::S(C)
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- S(j);N_GUARD::QAB(F),XS(j)
- S(j);N_GUARD::QAB(F)
- P(b);N_GUARD::S(C)
- Refutation
- P(d);
- Try
- Q(F);
- Threat
- DUALS(3)
- Refutation
- P(g);XQ(F)
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- S(i);N_GUARD::S(C)
- Refutation
- S(j);XQ(F)
- Try
- Q(F);P_PINP(d),XP(c)
- Vars
- S(i);N_GUARD,XP(G)::S(C)
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- S(j);N_GUARD::QAB(F),XS(i)
- Refutation
- S(j);
- Try
- Actual
- S(C);XP(d)
- Threat
- R(E)
- Vars
- P(c);CHECK::QAR(F)+S(C),XP(c)
- K(e);OGATEB,P-FLIGHT,P_SPINP(c),XS(C)::QAR2(F),XP(c)
- P(f);OGATEB,SBLOCK,XS(C)::QAR(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).