MESON Chess Problem Database
Problem Display
PID: 224616 (8/3R3Q/3NpP2/R1b3P1/2pk1p2/2n2Bp1/1PP3K1/8 w - - 0 1)
van Foreest, D
Source?, 1887
#2
10 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ke3
- 2.Sxc4#
- 1...Ke5
- 2.Sxc4#
- 2.Sf7#
- 1...Ba3
- 2.Sf5#
- 1...Bb4
- 2.Sf5#
- 1...Bb6
- 2.Sf5#
- 1...Ba7
- 2.Sf5#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...e5
- 2.Sf5#
- 1...Ke3
- Tries
- 1.Sxc4+?
- 1...Bd6
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 2.Qe4#
- 1...Kxc4!
- 1...Bd6
- 1.Rb5?
- 1...Ke3
- 2.Sxc4#
- 1...Ke5
- 2.Sxc4#
- 2.Sf7#
- 1...Sxb5
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Ba3
- 2.Sf5#
- 1...Bb4
- 2.Sf5#
- 1...Bb6
- 2.Sf5#
- 1...Ba7
- 2.Sf5#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...e5
- 2.Sf5#
- 1...Bxd6!
- 1...Ke3
- 1.Qd3+?
- 1...Ke5
- 2.Sxc4#
- 2.Sf7#
- 2.Qxc3#
- 1...cxd3!
- 1...Ke5
- 1.Qg6?
- 1...Ke3
- 2.Sxc4#
- 1...Ke5
- 2.Sxc4#
- 2.Sf7#
- 1...Se4
- 2.Qxe4#
- 1...Ba3
- 2.Sf5#
- 1...Bb4
- 2.Sf5#
- 1...Bb6
- 2.Sf5#
- 1...Ba7
- 2.Sf5#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...e5
- 2.Sf5#
- 1...Bxd6!
- 1...Ke3
- 1.bxc3+?
- 1...Ke3
- 2.Sxc4#
- 1...Ke5
- 2.Sxc4#
- 2.Sf7#
- 2.Rxc5#
- 2.Qe4#
- 1...Kxc3!
- 1...Ke3
- 1.f7?
- 1...Ke3
- 2.Sxc4#
- 1...Ke5
- 2.Sxc4#
- 2.Qg7#
- 2.Qh8#
- 1...Se4
- 2.Qxe4#
- 1...Ba3
- 2.Sf5#
- 1...Bb4
- 2.Sf5#
- 1...Bb6
- 2.Sf5#
- 1...Ba7
- 2.Sf5#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...e5
- 2.Sf5#
- 1...Bxd6!
- 1...Ke3
- 1.Sxc4+?
- Keys
- 1.Rd8!
- 1...Ke3
- 2.Sxc4#
- 1...Ke5
- 2.Sxc4#
- 2.Sf7#
- 1...Bxd6
- 2.Qa7#
- 1...Se4
- 2.Qxe4#
- 1...Ba3
- 2.Sf5#
- 1...Bb4
- 2.Sf5#
- 1...Bb6
- 2.Sf5#
- 1...Ba7
- 2.Sf5#
- 2.Qxa7#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...e5
- 2.Sf5#
- 1...Ke3
- 1.Rd8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(d);S_FLIGHT::S(G),XP(c)
- B(f);::R(I)+S(G),DCHECK
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- P(g);SBLOCK::R(I)+S(G),DCHECK
- Tries
- Try
- S(G);CHECK,XP(c)
- Vars
- B(f);P_SPINB(f)::QAR1(J)
- Refutation
- K(d);P-FLIGHT,XS(G)
- Try
- R(E);
- Vars
- K(d);S_FLIGHT::S(G),XP(c)
- S(a);N_GUARD,XR(E)::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- B(f);::R(I)+S(G),DCHECK
- S(a);N_GUARD::QAR1(J)
- P(g);SBLOCK::R(I)+S(G),DCHECK
- Refutation
- B(f);P_SPINB(f),XS(G)
- Try
- Q(J);CHECK
- Refutation
- P(c);XQ(J)
- Try
- Q(J);
- Vars
- K(d);S_FLIGHT::S(G),XP(c)
- S(a);N_GUARD::QAR1(J),XS(a)
- B(f);::R(I)+S(G),DCHECK
- S(a);N_GUARD::QAR1(J)
- P(g);SBLOCK::R(I)+S(G),DCHECK
- Refutation
- B(f);P_SPINB(f),XS(G)
- Try
- P(A);CHECK,XS(a)
- Vars
- K(d);S_FLIGHT::S(G),XP(c)
- Refutation
- K(d);S_FLIGHT,XP(A)
- Try
- P(H);
- Vars
- K(d);S_FLIGHT::S(G),XP(c)
- S(a);N_GUARD::QAR1(J),XS(a)
- B(f);::R(I)+S(G),DCHECK
- S(a);N_GUARD::QAR1(J)
- P(g);SBLOCK::R(I)+S(G),DCHECK
- Refutation
- B(f);P_SPINB(f),XS(G)
- Try
- Actual
- R(I);
- Vars
- K(d);S_FLIGHT::S(G),XP(c)
- B(f);OGATEB,P_SPINB(f),XS(G)::QAB(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- B(f);::R(I)+S(G),DCHECK
- S(a);N_GUARD::QAR1(J)
- P(g);SBLOCK::R(I)+S(G),DCHECK
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).