MESON Chess Problem Database
Problem Display
PID: 207044 (1Q4B1/1b2P2R/2p5/P1kq1p2/P2R3K/2P4P/5N2/2n3B1 w - - 0 1)
Kempe, Alfred
Belfort Ty., 1863
#2
12 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Rc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qa2
- 2.Qd6#
- 2.Qa7#
- 1...Qg2
- 2.Rc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qb3
- 2.Qd6#
- 1...Qf3
- 2.Rc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qc4
- 2.Rxc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qe6
- 2.Qa7#
- 1...Qf7
- 2.Qd6#
- 2.Qa7#
- 1...Qxg8
- 2.Qd6#
- 2.Qa7#
- 1...Qe5
- 2.Rc4#
- 2.Qxe5#
- 2.Qa7#
- 1...Qd6
- 2.Rc4#
- 2.Qxd6#
- 2.Qa7#
- 1...Qd7
- 2.Rc4#
- 2.Qa7#
- 1...Qd8
- 2.Rc4#
- 1...Ba6
- 2.Qb4#
- 1...Ba8
- 2.Qb4#
- 1...Bc8
- 2.Qb4#
- 1...Sa2
- 2.Sd3#
- 1...Se2
- 2.Sd3#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Qh1
- Tries
- 1.Se4+?
- 1...Qxe4+
- 2.Rxe4#
- 1...fxe4!
- 1...Qxe4+
- 1.Bxd5?
- 1...Sa2
- 2.Sd3#
- 1...Ba6
- 2.Qb4#
- 1...Ba8
- 2.Qb4#
- 1...Bc8
- 2.Qb4#
- 1...Se2
- 2.Sd3#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...f4
- 2.Se4#
- 1...cxd5!
- 1...Sa2
- 1.Rc4+?
- 1...Qxc4+
- 2.Se4#
- 1...Kxc4!
- 1...Qxc4+
- 1.Qd6+?
- 1...Qxd6
- 2.Rc4#
- 1...Kxd6!
- 1...Qxd6
- 1.Se4+?
- Keys
- 1.Rh5!
- 1...Qe4+
- 2.Sxe4#
- 1...Qxd4+
- 2.Se4#
- 1...Qxg8
- 2.Se4#
- 2.Qd6#
- 2.Qa7#
- 1...Sa2
- 2.Sd3#
- 1...Qh1
- 2.Rc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qa2
- 2.Se4#
- 2.Qd6#
- 2.Qa7#
- 1...Qg2
- 2.Rc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qb3
- 2.Se4#
- 2.Qd6#
- 1...Qf3
- 2.Rc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qc4
- 2.Se4#
- 2.Rxc4#
- 2.Qd6#
- 2.Qa7#
- 1...Qe6
- 2.Qa7#
- 1...Qf7
- 2.Se4#
- 2.Qd6#
- 2.Qa7#
- 1...Qe5
- 2.Rc4#
- 2.Qxe5#
- 2.Qa7#
- 1...Qd6
- 2.Se4#
- 2.Rc4#
- 2.Qxd6#
- 2.Qa7#
- 1...Qd7
- 2.Se4#
- 2.Rc4#
- 2.Qa7#
- 1...Qd8
- 2.Se4#
- 2.Rc4#
- 1...Ba6
- 2.Qb4#
- 1...Ba8
- 2.Qb4#
- 1...Bc8
- 2.Qb4#
- 1...Se2
- 2.Sd3#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...f4
- 2.Se4#
- 1...Qe4+
- 1.Rh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(c);N_GUARD::QAB1(K)
- Q(c);::QAB(K)
- Q(c);N_GUARD,P_PINP(I)::R1(F)
- B(f);OGATE::QAB1(K)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- Tries
- Try
- S(B);CHECK
- Vars
- Q(c);CHECK,OGATE,XS(B)::B(A)+R(F),XQ(c)
- Refutation
- P(d);XS(B)
- Try
- B(L);XQ(c)
- Vars
- S(a);N_GUARD::S(B)
- B(f);OGATE::QAB1(K)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD::S(B)
- Refutation
- P(e);XB(L)
- Try
- R(F);CHECK
- Vars
- Q(c);CHECK,XR(F)::B(A)+S(B),DCHECK
- Refutation
- K(b);P-FLIGHT,P_SPINQ(c),XR(F)
- Try
- Q(K);CHECK
- Vars
- Q(c);SBLOCK,XQ(K)::R1(F)
- Refutation
- K(b);P_SPINQ(c),S_FLIGHT,XQ(K)
- Try
- Actual
- R(J);
- Vars
- Q(c);CHECK,N_GUARD,P_SPINP(d)::S(B),XQ(c)
- Q(c);CHECK,N_GUARD,P_SPINP(d),XR(F)::S(B)
- S(a);N_GUARD::S(B)
- Q(c);P_SPINP(d)::QAB(K)
- B(f);OGATE::QAB1(K)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD,P_SPINQ(c)::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).