MESON Chess Problem Database
Problem Display
PID: 28652 (2r5/2b2PP1/4Q3/1np1p2p/N2Bk3/1n1R2P1/1N1prpPK/5b2 w - - 0 1)
Steiner, Paul
The Problemist, 2001
#2
10 + 12
SOLUTION
- SOUND
- Sets
- 1...Ba5
- 2.Qxe5#
- 1...Bb6
- 2.Qxe5#
- 1...Bd8
- 2.Qxe5#
- 1...Sa1
- 2.Sxc5#
- 1...Sc1
- 2.Sxc5#
- 1...S3xd4
- 2.Sxc5#
- 1...Sa5
- 2.Sxc5#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...S5xd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 2.Qxe5#
- 1...Sa7
- 2.Sc3#
- 1...Ba5
- Tries
- 1.Bxf2?
- threat
- 2.Qg6#
- 1...S3d4
- 2.Sxc5#
- 1...S5d4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Rxf2!
- threat
- 1.Bc3?
- threat
- 2.Qg6#
- 1...S3d4
- 2.Sxc5#
- 1...Sd6
- 2.Qxe5#
- 1...S5d4!
- threat
- 1.Be3?
- threat
- 2.Qg6#
- 1...S3d4
- 2.Sxc5#
- 1...S5d4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Bxg2!
- threat
- 1.Bxc5?
- threat
- 2.Qg6#
- 1...S5d4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...S3d4!
- threat
- 1.Bxe5?
- threat
- 2.Bd6#
- 2.Bxc7#
- 1...Bxe5
- 2.Qg6#
- 1...Ba5
- 2.Bc3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bb8#
- 1...Bb6
- 2.Bc3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bb8#
- 1...Bd6
- 2.Bxd6#
- 1...Bb8
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 1...Bd8
- 2.Bc3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bb8#
- 1...S3d4
- 2.Sxc5#
- 1...S5d4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 2.Bc3#
- 2.Bd4#
- 2.Bf4#
- 2.Bxd6#
- 2.Bf6#
- 1...Re8!
- threat
- 1.f8Q?
- threat
- 2.Qc6#
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Bxg2
- 2.Qc6#
- 2.Qf4#
- 2.Qff5#
- 1...S3xd4
- 2.Sxc5#
- 2.Qf4#
- 1...S5xd4
- 2.Sc3#
- 2.Qf4#
- 1...Re3
- 2.Qc6#
- 2.Qf4#
- 2.Qff5#
- 1...Rd8
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Ba5
- 2.Qxe5#
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Bb6
- 2.Qxe5#
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Bd6
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Bb8
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Bd8
- 2.Qxe5#
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Sa5
- 2.Sxc5#
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Sc3
- 2.Sxc3#
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Sd6
- 2.Sc3#
- 2.Qxe5#
- 2.Qf3#
- 2.Qf4#
- 1...Sa7
- 2.Sc3#
- 2.Qf3#
- 2.Qf4#
- 2.Qff5#
- 1...Rxf8!
- threat
- 1.f8R?
- threat
- 2.Rf4#
- 2.Qc6#
- 1...S3xd4
- 2.Sxc5#
- 2.Rf4#
- 1...S5xd4
- 2.Sc3#
- 2.Rf4#
- 1...Rd8
- 2.Rf4#
- 1...Ba5
- 2.Rf4#
- 2.Qxe5#
- 1...Bb6
- 2.Rf4#
- 2.Qxe5#
- 1...Bd6
- 2.Rf4#
- 1...Bb8
- 2.Rf4#
- 1...Bd8
- 2.Rf4#
- 2.Qxe5#
- 1...Sa5
- 2.Sxc5#
- 2.Rf4#
- 1...Sc3
- 2.Sxc3#
- 2.Rf4#
- 1...Sd6
- 2.Sc3#
- 2.Rf4#
- 2.Qxe5#
- 1...Sa7
- 2.Sc3#
- 2.Rf4#
- 1...Rxf8!
- threat
- 1.g8Q?
- threat
- 2.Qh7#
- 2.Qgg6#
- 1...S3xd4
- 2.Sxc5#
- 1...S5xd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 2.Qxe5#
- 1...Rxg8!
- threat
- 1.g8S?
- threat
- 2.Sf6#
- 1...Bd8
- 2.Qxe5#
- 1...Rxg8!
- threat
- 1.g8B?
- threat
- 2.Bh7#
- 1...S3xd4
- 2.Sxc5#
- 1...S5xd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 2.Qxe5#
- 1...Rxg8!
- threat
- 1.Bxf2?
- Keys
- 1.Rf3!
- threat
- 2.Rf4#
- 1...Kxd4
- 2.Qc4#
- 1...S3xd4
- 2.Sxc5#
- 1...S5xd4
- 2.Sc3#
- 1...cxd4
- 2.Qc6#
- threat
- 1.Rf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- B(k);N_GUARD::QAR1(H),XP(i)
- S(e);N_GUARD::S(F),XP(h)
- S(e);N_GUARD,XB(G)::S(F),XP(h)
- S(g);N_GUARD::S(F)
- S(g);N_GUARD::S(F),XS(g)
- S(g);N_GUARD,XB(G)::S(F)
- Tries
- Try
- B(G);XP(d)
- Threat
- QAB(H)
- Vars
- S(e);N_GUARD::S(F),XP(h)
- S(g);N_GUARD::S(F)
- Refutation
- R(c);P_PINP(B),XB(G)
- Try
- B(G);
- Threat
- QAB(H)
- Vars
- S(e);N_GUARD::S(F),XP(h)
- S(g);S_CUTB(k)::QAR1(H),XP(i)
- Refutation
- S(g);
- Try
- B(G);
- Threat
- QAB(H)
- Vars
- S(e);N_GUARD::S(F),XP(h)
- S(g);N_GUARD::S(F)
- Refutation
- B(a);XP(B)
- Try
- B(G);XP(h)
- Threat
- QAB(H)
- Vars
- S(g);N_GUARD::S(F)
- Refutation
- S(e);
- Try
- B(G);XP(i)
- Threat
- DUALS(2)
- Vars
- B(k);P_PINP(E),P_SPINB(k),SBLOCK,XB(G)::QAB(H)
- B(k);::QAR(H)+B(G),XB(k)
- S(e);N_GUARD::S(F),XP(h)
- S(g);N_GUARD::S(F)
- Refutation
- R(l);
- Try
- P(I);
- Threat
- DUALS(4)
- Refutation
- R(l);XQ(I)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- R(l);::R1(I)
- B(k);::R1(I)
- Refutation
- R(l);XR(I)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XB(G)::S(F),XP(h)
- S(g);N_GUARD,XB(G)::S(F)
- Refutation
- R(l);XQ(J)
- Try
- P(J);
- Threat
- S(J)
- Vars
- B(k);N_GUARD::QAR1(H),XP(i)
- Refutation
- R(l);XS(J)
- Try
- P(J);
- Threat
- B(J)
- Vars
- S(e);N_GUARD,XB(G)::S(F),XP(h)
- S(g);N_GUARD,XB(G)::S(F)
- Refutation
- R(l);XB(J)
- Try
- Actual
- R(D);
- Threat
- R1(D)
- Vars
- K(f);N_SPINP(i),OGATEB,P-FLIGHT,XB(G)::QAR1(H)
- S(e);N_GUARD,SBLOCK,XB(G)::S(F),XP(h)
- S(g);N_GUARD,SBLOCK,XB(G)::S(F)
- P(h);SBLOCK,XB(G)::QAB(H)
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).