MESON Chess Problem Database
Problem Display
PID: 274733 (1B2K3/r3p3/2Q1p3/3N1kPB/pR3p2/4pNpn/4p1P1/b2b2q1 w - - 0 1)
Lyris, Basil D
To Mat, 1963
#2
9 + 13
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Sxe7#
- 1...Ra6
- 2.Sxe7#
- 1...Ra8
- 2.Sxe7#
- 1...Bc2
- 2.Qxc2#
- 1...Sf2
- 2.Rxf4#
- 1...Sxg5
- 2.Sh4#
- 2.Rxf4#
- 1...exd5
- 2.Qg6#
- 1...e5
- 2.Qg6#
- 1...Ra5
- Tries
- 1.Kf7?
- threat
- 2.Qxe6#
- 1...exd5
- 2.Qe6#
- 2.Qg6#
- 1...Ra6
- 2.Sxe7#
- 1...e5
- 2.Qe6#
- 2.Qg6#
- 1...Sxg5+!
- threat
- 1.Sc3?
- threat
- 2.Qe4#
- 1...Sxg5
- 2.Rxf4#
- 1...Sf2
- 2.Rxf4#
- 1...e5
- 2.Qg6#
- 1...Bc2!
- threat
- 1.Sxe3+?
- 1...fxe3
- 2.Qe4#
- 1...Qxe3!
- 1...fxe3
- 1.Sxf4?
- threat
- 2.Qe4#
- 2.Qxe6#
- 1...Sxf4
- 2.Rxf4#
- 2.Qe4#
- 1...Ra6
- 2.Qe4#
- 1...Bd4
- 2.Qxe6#
- 1...Bc2
- 2.Qxc2#
- 2.Qxe6#
- 1...Bb3
- 2.Qe4#
- 1...Sf2
- 2.Qxe6#
- 1...e5
- 2.Qe4#
- 2.Qe6#
- 2.Qg6#
- 1...Sxg5!
- threat
- 1.Sb6?
- threat
- 2.Qe4#
- 1...Sxg5
- 2.Rxf4#
- 1...Bc2
- 2.Qxc2#
- 1...Sf2
- 2.Rxf4#
- 1...e5
- 2.Qg6#
- 1...Bd4!
- threat
- 1.Sf6?
- threat
- 2.Qe4#
- 1...Sxg5
- 2.Rxf4#
- 1...Bc2
- 2.Qxc2#
- 1...Sf2
- 2.Rxf4#
- 1...e5!
- threat
- 1.Sc7?
- threat
- 2.Qe4#
- 2.Qxe6#
- 1...Rxc7
- 2.Qe4#
- 1...Ra6
- 2.Qe4#
- 1...Bd4
- 2.Qxe6#
- 1...Bc2
- 2.Qxc2#
- 2.Qxe6#
- 1...Bb3
- 2.Qe4#
- 1...Sf2
- 2.Qxe6#
- 1...e5
- 2.Qe4#
- 2.Qe6#
- 2.Qg6#
- 1...Sxg5!
- threat
- 1.Bg6+?
- 1...Kg4
- 2.Qxe6#
- 1...Kxg6!
- 1...Kg4
- 1.Bf7?
- threat
- 2.Qxe6#
- 1...Kg4
- 2.Qxe6#
- 1...Sxg5
- 2.Rxf4#
- 1...exd5
- 2.Qe6#
- 1...e5
- 2.Qe6#
- 1...Ra6!
- threat
- 1.Bxa7?
- threat
- 2.Sxe7#
- 1...Sxg5
- 2.Rxf4#
- 1...exd5
- 2.Qg6#
- 1...Bf6!
- threat
- 1.Kf7?
- Keys
- 1.Re4!
- threat
- 2.Qxe6#
- 1...Kxe4
- 2.Bg6#
- 1...Sxg5
- 2.Rxf4#
- 1...exd5
- 2.Qe6#
- 2.Qg6#
- 1...Ra6
- 2.Sxe7#
- 1...Be5
- 2.Rxe5#
- 1...e5
- 2.Qg6#
- threat
- 1.Re4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(l);N_GUARD::S(D),XP(m)
- R(l);N_GUARD,P_PINB(H)::S(D),XP(m)
- B(b);N_GUARD::QAB(G),XB(b)
- S(g);N_GUARD::R1(C),XP(i)
- P(k);OGATE,XS(D)::QAB1(G)
- P(k);OGATE::QAB1(G)
- Tries
- Try
- K(I);S_FLIGHT
- Threat
- QAB1(G),XP(k)
- Vars
- R(l);N_GUARD::S(D),XP(m)
- Refutation
- S(g);CHECK,XP(E)
- Try
- S(D);
- Threat
- QAB1(G)
- Vars
- S(g);N_GUARD,XP(E)::R1(C),XP(i)
- S(g);N_GUARD::R1(C),XP(i)
- P(k);OGATE::QAB1(G)
- Refutation
- B(b);
- Try
- S(D);CHECK,XP(e)
- Vars
- P(i);XS(D)::QAB1(G)
- Refutation
- Q(c);XS(D)
- Try
- S(D);XP(i)
- Threat
- DUALS(2)
- Vars
- R(l);::QAB1(G)
- B(a);::QAB1(G),XP(k)
- B(b);::QAB1(G)
- S(g);::QAB1(G),XP(k)
- Refutation
- S(g);XP(E)
- Try
- S(D);
- Threat
- QAB1(G)
- Vars
- S(g);N_GUARD,XP(E)::R1(C),XP(i)
- B(b);N_GUARD::QAB(G),XB(b)
- S(g);N_GUARD::R1(C),XP(i)
- P(k);OGATE::QAB1(G)
- Refutation
- B(a);
- Try
- S(D);
- Threat
- QAB1(G)
- Vars
- S(g);N_GUARD,XP(E)::R1(C),XP(i)
- B(b);N_GUARD::QAB(G),XB(b)
- S(g);N_GUARD::R1(C),XP(i)
- Refutation
- P(k);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(l);XS(D)::QAB1(G)
- R(l);::QAB1(G)
- B(a);::QAB1(G),XP(k)
- B(b);::QAB1(G)
- S(g);::QAB1(G),XP(k)
- Refutation
- S(g);XP(E)
- Try
- B(F);CHECK
- Vars
- K(j);N_GUARD,P_SPINP(i),S_FLIGHT::QAB(G),XP(k)
- Refutation
- K(j);P_SPINP(k),S_FLIGHT,XB(F)
- Try
- B(F);
- Threat
- QAB1(G),XP(k)
- Vars
- K(j);P_SPINP(i),S_FLIGHT::QAB(G),XP(k)
- S(g);N_GUARD,XP(E)::R1(C),XP(i)
- P(k);XS(D)::QAB1(G)
- P(k);::QAB1(G)
- Refutation
- R(l);
- Try
- B(H);XR(l)
- Threat
- S(D),XP(m)
- Vars
- S(g);N_GUARD,XP(E)::R1(C),XP(i)
- P(k);OGATE,XS(D)::QAB1(G)
- Refutation
- B(a);
- Try
- Actual
- R(C);
- Threat
- QAB1(G),XP(k)
- Vars
- K(j);N_GUARD,S_FLIGHT,XR(C)::B(F)
- S(g);N_GUARD,XP(E)::R1(C),XP(i)
- R(l);N_GUARD::S(D),XP(m)
- B(a);N_GUARD::R1(C),XB(a)
- P(k);OGATE::QAB1(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).