MESON Chess Problem Database
Problem Display
PID: 102389 (2b5/4p3/2Q2p1K/R4p1B/4Pk2/2NR2p1/3b4/2n1n1B1 w - - 0 1)
di Scala, Pascal
Europe Echecs, 1989
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxc3
- 2.Be3#
- 1...Be3
- 2.Bxe3#
- 1...Ba6
- 2.Rxf5#
- 1...Be6
- 2.Qc7#
- 1...Bb7
- 2.Rxf5#
- 1...Sa2
- 2.Se2#
- 1...Se2
- 2.Sxe2#
- 1...Sb3
- 2.Se2#
- 1...Scxd3
- 2.Se2#
- 1...Sc2
- 2.Rf3#
- 1...Sg2
- 2.Rf3#
- 1...Sf3
- 2.Rxf3#
- 1...g2
- 2.Bh2#
- 1...fxe4
- 2.Qxe4#
- 1...Bxc3
- Tries
- 1.Qe6?
- threat
- 2.Sd5#
- 2.Rxf5#
- 1...Bxc3
- 2.Be3#
- 2.Rxf5#
- 1...fxe4
- 2.Sd5#
- 2.Rf5#
- 2.Qxe4#
- 1...Bb7
- 2.Rxf5#
- 2.Qxf5#
- 1...Bxe6!
- threat
- 1.Qxf6?
- threat
- 2.Qh4#
- 2.Qe5#
- 2.Qg5#
- 1...Bxc3
- 2.Qh4#
- 1...Scxd3
- 2.Qh4#
- 2.Qg5#
- 1...Sexd3
- 2.Qh4#
- 2.Qg5#
- 1...Sg2
- 2.Rf3#
- 2.Qe5#
- 2.Qg5#
- 1...Sf3
- 2.Rxf3#
- 1...e5
- 2.Qh4#
- 2.Qxe5#
- 2.Qg5#
- 1...exf6!
- threat
- 1.Qxc8?
- threat
- 2.Rxf5#
- 2.Qxf5#
- 1...Bxc3
- 2.Qxf5#
- 1...fxe4
- 2.Rf5#
- 2.Qg4#
- 2.Qf5#
- 1...e5
- 2.Qxf5#
- 1...e6!
- threat
- 1.exf5?
- threat
- 2.Rd4#
- 2.Qa4#
- 2.Qe4#
- 2.Qc4#
- 1...Bxc3
- 2.Be3#
- 1...Scxd3
- 2.Se2#
- 2.Qe4#
- 2.Qc4#
- 1...Sexd3
- 2.Qf3#
- 2.Qe4#
- 2.Qc4#
- 1...e5
- 2.Qe4#
- 1...Bd7
- 2.Rd4#
- 2.Qe4#
- 2.Qc4#
- 1...Be3
- 2.Bxe3#
- 2.Qe4#
- 1...Ba6
- 2.Rd4#
- 2.Qe4#
- 1...Be6
- 2.Rd4#
- 2.Qe4#
- 2.Qc7#
- 1...Bb7
- 2.Rd4#
- 1...Sa2
- 2.Se2#
- 2.Rd4#
- 2.Qe4#
- 2.Qc4#
- 1...Se2
- 2.Sxe2#
- 2.Qe4#
- 1...Sb3
- 2.Se2#
- 2.Qe4#
- 1...Sc2
- 2.Rf3#
- 2.Qf3#
- 2.Qe4#
- 1...Sf3
- 2.Rxf3#
- 2.Qxf3#
- 2.Qe4#
- 1...g2
- 2.Bh2#
- 2.Qa4#
- 2.Qe4#
- 2.Qc4#
- 1...Bxf5!
- threat
- 1.e5?
- threat
- 2.Rd4#
- 2.Qa4#
- 2.Qc4#
- 1...Bxc3
- 2.Be3#
- 1...Scxd3
- 2.Se2#
- 2.Qc4#
- 1...Sexd3
- 2.Qf3#
- 2.Qc4#
- 1...Bd7
- 2.Rd4#
- 2.Qc4#
- 1...Be3
- 2.Bxe3#
- 1...Ba6
- 2.Rd4#
- 1...Be6
- 2.Rd4#
- 1...Bb7
- 2.Rd4#
- 1...Sa2
- 2.Se2#
- 2.Rd4#
- 2.Qc4#
- 1...Se2
- 2.Sxe2#
- 1...Sb3
- 2.Se2#
- 1...Sc2
- 2.Rf3#
- 2.Qf3#
- 1...Sf3
- 2.Rxf3#
- 2.Qxf3#
- 1...g2
- 2.Bh2#
- 2.Qa4#
- 2.Qc4#
- 1...fxe5!
- threat
- 1.Qe6?
- Keys
- 1.Qc4!
- threat
- 2.exf5#
- 2.e5#
- 1...Bxc3
- 2.Be3#
- 1...fxe4
- 2.Qxe4#
- 1...Be3
- 2.Bxe3#
- 1...Ba6
- 2.Rxf5#
- 1...Be6
- 2.Qc7#
- 1...Bb7
- 2.Rxf5#
- 1...Se2
- 2.Sxe2#
- 1...Sb3
- 2.Se2#
- 1...Sc2
- 2.Rf3#
- 1...Sf3
- 2.Rxf3#
- 1...e5
- 2.Sd5#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- B(c);N_GUARD,XS(B)::B(A)
- B(c);N_GUARD::B(A),XB(c)
- B(i);N_GUARD::R1(E),XP(f)
- B(i);S_CUTP(h)::QAB(G)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD,XR(C)::S(B)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(d);OGATEB::B(A)
- P(f);OGATE,XP(D)::QAR1(G),XP(f)
- Tries
- Try
- Q(G);
- Threat
- DUALS(2)
- Refutation
- B(i);XQ(G)
- Try
- Q(G);P_PINP(f),XP(g)
- Threat
- DUALS(3)
- Vars
- B(c);XS(B)::QAR2(G)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(h);N_SPINP(f),XQ(G)
- Try
- Q(G);XB(i)
- Threat
- DUALS(2)
- Vars
- B(c);XS(B)::QAR1(G),XP(f)
- P(h);::QAR1(G),XP(f)
- Refutation
- P(h);
- Try
- P(D);XP(f)
- Threat
- DUALS(4)
- Vars
- B(c);N_GUARD,XS(B)::B(A)
- P(h);::QAR1(G)
- B(i);::R(C)
- Refutation
- B(i);XP(D)
- Try
- P(D);
- Threat
- DUALS(3)
- Vars
- B(c);N_GUARD,XS(B)::B(A)
- B(c);N_GUARD::B(A),XB(c)
- B(i);::R(C)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD::S(B)
- Refutation
- P(g);XP(D)
- Try
- Actual
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(c);N_GUARD,XS(B)::B(A)
- P(f);OGATE,P_SPINP(f),XP(D)::QAR1(G),XP(f)
- B(c);N_GUARD::B(A),XB(c)
- B(i);N_GUARD::R1(E),XP(f)
- B(i);S_CUTP(h)::QAB(G)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD::S(B)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(h);SBLOCK::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).