MESON Chess Problem Database
Problem Display
PID: 102634 (4Qb2/1NN3q1/b5r1/4p1p1/4k1P1/2P1Pp2/2n2K2/3R1B2 w - - 0 1)
di Scala, Pascal
Europe Echecs, 1988
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qh8
- 2.Qxg6#
- 1...Qxc7
- 2.Qxg6#
- 1...Qe7
- 2.Qxg6#
- 1...Rc6
- 2.Qxc6#
- 1...Rd6
- 2.Sc5#
- 1...Bd3
- 2.Bxd3#
- 1...Bxb7
- 2.Bd3#
- 1...Bc5
- 2.Sxc5#
- 1...Bd6
- 2.Qc6#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sxe3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Qh8
- Tries
- 1.Sd6+?
- 1...Bxd6
- 2.Qc6#
- 1...Rxd6!
- 1...Bxd6
- 1.Qf7?
- threat
- 2.Qd5#
- 2.Qxf3#
- 2.Qf5#
- 1...Bxb7
- 2.Bd3#
- 2.Qxf3#
- 2.Qf5#
- 1...Sxe3
- 2.Qxf3#
- 1...Qf6
- 2.Qd5#
- 1...Qg8
- 2.Qxf3#
- 2.Qf5#
- 1...Rd6
- 2.Sc5#
- 2.Qxf3#
- 2.Qf5#
- 1...Re6
- 2.Qxf3#
- 2.Qf5#
- 1...Rf6
- 2.Qd5#
- 1...Be2
- 2.Qd5#
- 2.Qf5#
- 1...Bc4
- 2.Qxf3#
- 2.Qf5#
- 1...Se1
- 2.Qd5#
- 2.Qf5#
- 1...Sb4
- 2.Qxf3#
- 2.Qf5#
- 1...Sd4
- 2.Qd5#
- 1...Qxf7!
- threat
- 1.Qxf8?
- threat
- 2.Sc5#
- 2.Qxf3#
- 2.Qf5#
- 1...Qxc7
- 2.Qxf3#
- 2.Qf5#
- 1...Bxb7
- 2.Bd3#
- 2.Qxf3#
- 2.Qf5#
- 1...Sxe3
- 2.Sc5#
- 2.Qxf3#
- 1...Qf6
- 2.Sc5#
- 1...Qd7
- 2.Sc5#
- 2.Qxf3#
- 1...Qe7
- 2.Qxf3#
- 2.Qf5#
- 1...Qf7
- 2.Sc5#
- 1...Rc6
- 2.Qxf3#
- 2.Qf5#
- 1...Rf6
- 2.Sc5#
- 1...Be2
- 2.Sc5#
- 2.Qf5#
- 1...Se1
- 2.Sc5#
- 2.Qf5#
- 1...Sd4
- 2.Sc5#
- 1...Qxf8!
- threat
- 1.Sd6+?
- Keys
- 1.Rd6!
- threat
- 2.Sc5#
- 2.Qc6#
- 1...Qxc7
- 2.Qxg6#
- 1...Rxd6
- 2.Sc5#
- 1...Bxb7
- 2.Bd3#
- 1...Bxd6
- 2.Qc6#
- 1...Sxe3
- 2.Rd4#
- 1...Qd7
- 2.Sc5#
- 1...Qf7
- 2.Sc5#
- 1...Qg8
- 2.Sc5#
- 1...Bc4
- 2.Sc5#
- 1...Bb5
- 2.Sc5#
- 1...Sb4
- 2.Sc5#
- 2.Rd4#
- 1...Sd4
- 2.Sc5#
- 2.Rxd4#
- threat
- 1.Rd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 10
- Sets
- Q(h);N_GUARD::QAB(I),XR(g)
- Q(h);N_GUARD,XS(H)::QAB(I),XR(g)
- Q(h);N_GUARD,N_SPINP(d)::QAB(I),XR(g)
- R(g);N_GUARD::QAB(I),XR(g)
- R(g);S_CUTB(i)::S(G)
- B(f);N_GUARD::B(B),XB(f)
- B(f);N_GUARD,XS(G)::B(B)
- B(i);N_GUARD,P_PINP(E)::S(G),XB(i)
- B(i);S_CUTR(g)::QAB(I)
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD,XP(E)::R1(A)
- S(a);N_GUARD::R1(A),XS(a)
- Tries
- Try
- S(G);CHECK
- Vars
- B(i);XS(G)::QAB(I)
- Refutation
- R(g);XS(G)
- Try
- Q(I);N_PINP(d)
- Threat
- DUALS(3)
- Vars
- S(a);XP(E)::QAB1(I),XP(b)
- Q(h);::QAB1(I)
- R(g);::QAB1(I)
- S(a);::QAB1(I)
- Refutation
- Q(h);XQ(I)
- Try
- Q(I);N_PINP(d),XB(i)
- Threat
- DUALS(3)
- Vars
- Q(h);::S(G)
- R(g);::S(G)
- S(a);::S(G)
- Refutation
- Q(h);XQ(I)
- Try
- Actual
- R(A);
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD,XS(H)::QAB(I),XR(g)
- R(g);XR(A)::S(G)
- B(f);N_GUARD,XS(G)::B(B)
- B(i);XR(A)::QAB(I)
- S(a);N_GUARD,XP(E)::R1(A)
- Q(h);::S(G)
- B(f);::S(G)
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).