MESON Chess Problem Database
Problem Display
PID: 86649 (8/3pB1N1/p2P2p1/Q2N1nR1/P1Bk1pn1/1P3P2/8/6K1 w - - 0 1)
Aloni, Yoel
Sakkelet, 1993
#2
11 + 7
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Qc3#
- 1...Sf2
- 2.Bf6#
- 1...Sh2
- 2.Bf6#
- 1...Sge3
- 2.Bf6#
- 1...Se5
- 2.Qb6#
- 1...Sf6
- 2.Bxf6#
- 1...Sgh6
- 2.Bf6#
- 1...Sfe3
- 2.Qb6#
- 1...Sg3
- 2.Qb6#
- 1...Sh4
- 2.Qb6#
- 1...Sxd6
- 2.Qb6#
- 1...Sfh6
- 2.Qb6#
- 1...Sxe7
- 2.Qb6#
- 1...Sxg7
- 2.Qb6#
- 1...Ke5
- Tries
- 1.Sxf5+?
- 1...Ke5
- 2.Sc3#
- 2.Sde3#
- 2.Sb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...gxf5!
- 1...Ke5
- 1.Se6+?
- 1...Ke5
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sdxf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sdc7#
- 1...dxe6!
- 1...Ke5
- 1.Se8?
- 1...Sxd6
- 2.Qb6#
- 1...Sxe7
- 2.Qb6#
- 1...Sf2
- 2.Bf6#
- 1...Sh2
- 2.Bf6#
- 1...Sge3
- 2.Bf6#
- 1...Se5
- 2.Qb6#
- 1...Sf6
- 2.Bxf6#
- 1...Sgh6
- 2.Bf6#
- 1...Sfe3
- 2.Qb6#
- 1...Sg3
- 2.Qb6#
- 1...Sh4
- 2.Qb6#
- 1...Sfh6
- 2.Qb6#
- 1...Sg7
- 2.Qb6#
- 1...Ke5!
- 1...Sxd6
- 1.Bf6+?
- 1...Se5
- 2.Qb6#
- 1...Sxf6!
- 1...Se5
- 1.Bd8?
- 1...Sxd6
- 2.Bb6#
- 2.Qb6#
- 1...Sxg7
- 2.Bb6#
- 2.Qb6#
- 1...Sf2
- 2.Bf6#
- 1...Sh2
- 2.Bf6#
- 1...Sge3
- 2.Bf6#
- 1...Se5
- 2.Bb6#
- 2.Qb6#
- 1...Sf6
- 2.Bxf6#
- 1...Sgh6
- 2.Bf6#
- 1...Sfe3
- 2.Bb6#
- 2.Qb6#
- 1...Sg3
- 2.Bb6#
- 2.Qb6#
- 1...Sh4
- 2.Bb6#
- 2.Qb6#
- 1...Sfh6
- 2.Bb6#
- 2.Qb6#
- 1...Se7
- 2.Bb6#
- 2.Qb6#
- 1...Ke5!
- 1...Sxd6
- 1.Qd2+?
- 1...Ke5
- 2.Qc3#
- 2.Qxf4#
- 2.Qb2#
- 1...Kc5!
- 1...Ke5
- 1.Qb4?
- 1...Ke5
- 2.Qc3#
- 1...Sxd6
- 2.Qb6#
- 1...Sxe7
- 2.Bf1#
- 2.Be2#
- 2.Bb5#
- 2.Bxa6#
- 2.Qb6#
- 1...Sxg7
- 2.Bf1#
- 2.Be2#
- 2.Bb5#
- 2.Bxa6#
- 2.Qb6#
- 1...Sf2
- 2.Bf6#
- 1...Sh2
- 2.Bf6#
- 1...Sge3
- 2.Bf6#
- 1...Se5
- 2.Qb6#
- 1...Sf6
- 2.Bxf6#
- 1...Sgh6
- 2.Bf6#
- 1...Sfe3
- 2.Qb6#
- 1...Sg3
- 2.Bf1#
- 2.Be2#
- 2.Bb5#
- 2.Bxa6#
- 2.Qb6#
- 1...Sh4
- 2.Bf1#
- 2.Be2#
- 2.Bb5#
- 2.Bxa6#
- 2.Qb6#
- 1...Sfh6
- 2.Bf1#
- 2.Be2#
- 2.Bb5#
- 2.Bxa6#
- 2.Qb6#
- 1...a5!
- 1...Ke5
- 1.Qc5+?
- 1...Ke5
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Kxc5!
- 1...Ke5
- 1.Sxf5+?
- Keys
- 1.Se3!
- threat
- 2.Sc2#
- 1...Kxe3
- 2.Qc3#
- 1...Sgxe3
- 2.Bf6#
- 1...Sfxe3
- 2.Qd2#
- 1...fxe3
- 2.Rxg4#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- K(a);P_SPINS(d),S_FLIGHT::QAB(F)
- S(c);N_GUARD::B(J)
- S(c);SBLOCK::QAB(F)
- S(c);N_GUARD::B(J),XS(c)
- S(d);::QAB(F)
- S(d);XP(I)::QAB(F)
- S(d);XB(J)::QAB(F)
- S(d);XS(K)::QAB(F)
- Tries
- Try
- S(K);CHECK,XS(d)
- Refutation
- P(f);XS(K)
- Try
- S(K);CHECK
- Refutation
- P(g);XS(K)
- Try
- S(K);
- Vars
- S(d);XP(I)::QAB(F)
- S(d);XB(J)::QAB(F)
- S(c);N_GUARD::B(J)
- S(c);SBLOCK::QAB(F)
- S(c);N_GUARD::B(J),XS(c)
- S(d);::QAB(F)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- B(J);CHECK
- Vars
- S(c);P_SPINS(c)::QAB(F)
- Refutation
- S(c);XB(J)
- Try
- B(J);
- Vars
- S(c);N_GUARD::B(J)
- S(c);N_GUARD::B(J),XS(c)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- Q(F);CHECK
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Vars
- K(a);P_SPINS(d),S_FLIGHT::QAB(F)
- S(d);XP(I)::QAB(F)
- S(c);N_GUARD::B(J)
- S(c);SBLOCK::QAB(F)
- S(c);N_GUARD::B(J),XS(c)
- S(d);::QAB(F)
- Refutation
- P(e);
- Try
- Q(F);CHECK
- Refutation
- K(a);S_FLIGHT,XQ(F)
- Try
- Actual
- S(G);
- Threat
- S(G)
- Vars
- K(a);S_FLIGHT,XS(G)::QAR2(F)
- S(c);N_GUARD,SBLOCK,XS(G)::B(J)
- S(d);XS(G)::QAR2(F)
- P(b);OGATEB,SBLOCK,XS(G)::R(H),XS(c)
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).