MESON Chess Problem Database
Problem Display
PID: 239982 (2B2B2/6K1/2Pp1P2/2N1kp1R/Q2N1pP1/3pnP2/1b1P4/1bR1r3 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Parallele 50, 1950
#2
13 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Rxf5#
- 1...Sf1
- 2.Rxf5#
- 1...Sc2
- 2.Rxf5#
- 1...Sg2
- 2.Rxf5#
- 1...Sxg4
- 2.Rxf5#
- 1...Sd5
- 2.Sd7#
- 2.Rxf5#
- 1...d5
- 2.Sd7#
- 1...Sd1
- Tries
- 1.Sc2?
- threat
- 2.Qe4#
- 1...Sxc2
- 2.Rxf5#
- 1...Sxg4
- 2.Rxf5#
- 1...Bd4
- 2.Qxd4#
- 1...Sd1
- 2.Rxf5#
- 1...Sf1
- 2.Rxf5#
- 1...Sg2
- 2.Rxf5#
- 1...Sc4
- 2.Rxf5#
- 1...Sd5
- 2.Sxd3#
- 2.Rxf5#
- 1...d5
- 2.Sxd3#
- 1...Kd5!
- threat
- 1.Se2?
- threat
- 2.Qe4#
- 1...Kd5
- 2.Qe4#
- 1...Bd4
- 2.Qxd4#
- 1...Sc4
- 2.Rxf5#
- 1...d5
- 2.Qxf4#
- 1...dxe2!
- threat
- 1.Sdb3?
- threat
- 2.Qe4#
- 1...Kd5
- 2.Qe4#
- 1...Sxg4
- 2.Rxf5#
- 1...Bd4
- 2.Qxd4#
- 1...Sd1
- 2.Rxf5#
- 1...Sf1
- 2.Rxf5#
- 1...Sc2
- 2.Rxf5#
- 1...Sg2
- 2.Rxf5#
- 1...Sc4
- 2.Rxf5#
- 1...Sd5
- 2.Rxf5#
- 1...d5!
- threat
- 1.Sxf5?
- threat
- 2.Sxe3#
- 2.Qe4#
- 1...Sxf5+
- 2.Rxf5#
- 1...Kd5
- 2.Sxe3#
- 2.Se7#
- 2.Qe4#
- 1...Sxg4
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 1...Rh1
- 2.Qe4#
- 1...Bd4
- 2.Sxe3#
- 2.Qxd4#
- 1...Sd1
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 1...Sf1
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 1...Sc2
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 1...Sg2
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 1...Sd5
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 2.Bxd6#
- 1...d5
- 2.Sxe3#
- 2.Bd6#
- 1...Sc4!
- threat
- 1.Sde6?
- threat
- 2.Qe4#
- 1...Kd5
- 2.Qe4#
- 1...Bd4
- 2.Qxd4#
- 1...Sd1
- 2.Rxf5#
- 1...Sf1
- 2.Rxf5#
- 1...Sc2
- 2.Rxf5#
- 1...Sg2
- 2.Rxf5#
- 1...Sc4
- 2.Rxf5#
- 1...Sd5
- 2.Rxf5#
- 1...d5
- 2.Qxf4#
- 1...Sxg4!
- threat
- 1.Sxd3+?
- 1...Kd5
- 2.Be6#
- 1...Bxd3!
- 1...Kd5
- 1.dxe3?
- threat
- 2.Rxf5#
- 1...Kd5
- 2.Rxf5#
- 1...d2!
- threat
- 1.Sc2?
- Keys
- 1.Sb5!
- threat
- 2.Qe4#
- 1...Kd5
- 2.Qe4#
- 1...Sxg4
- 2.Rxf5#
- 1...Bd4
- 2.Qxd4#
- 1...Sd1
- 2.Rxf5#
- 1...Sf1
- 2.Rxf5#
- 1...Sc2
- 2.Rxf5#
- 1...Sg2
- 2.Rxf5#
- 1...Sc4
- 2.Rxf5#
- 1...Sd5
- 2.Bxd6#
- 2.Rxf5#
- 1...d5
- 2.Bd6#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(e);N_GUARD::R1(H),XP(h)
- S(e);N_GUARD,XP(F)::R1(H),XP(h)
- P(i);SBLOCK::S(G)
- Tries
- Try
- S(E);
- Threat
- QAR1(D)
- Vars
- S(e);N_GUARD,XS(E)::R1(H),XP(h)
- S(e);N_GUARD,XP(F)::R1(H),XP(h)
- B(c);N_GUARD::QAB1(D),XB(c)
- S(e);N_GUARD::R1(H),XP(h)
- P(i);SBLOCK::S(G),XP(d)
- Refutation
- K(g);P-FLIGHT,P_PINP(J)
- Try
- S(E);
- Threat
- QAR1(D)
- Vars
- K(g);P-FLIGHT,P_PINP(J)::QAB1(D)
- B(c);N_GUARD::QAB1(D),XB(c)
- S(e);N_GUARD::R1(H),XP(h)
- P(i);SBLOCK::QAB1(D),XP(f)
- Refutation
- P(d);XS(E)
- Try
- S(E);
- Threat
- QAR1(D)
- Vars
- K(g);P-FLIGHT,P_PINP(J)::QAB1(D)
- S(e);N_GUARD,XP(F)::R1(H),XP(h)
- B(c);N_GUARD::QAB1(D),XB(c)
- S(e);N_GUARD::R1(H),XP(h)
- S(e);N_GUARD,SBLOCK::R1(H),XP(h)
- Refutation
- P(i);
- Try
- S(E);XP(h)
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,OGATE,P_SPINS(e),XS(E)::R1(H),XS(e)
- R(b);::QAR1(D)
- Refutation
- S(e);
- Try
- S(E);
- Threat
- QAR1(D)
- Vars
- K(g);P-FLIGHT,P_PINP(J)::QAB1(D)
- B(c);N_GUARD::QAB1(D),XB(c)
- S(e);N_GUARD::R1(H),XP(h)
- S(e);N_GUARD,SBLOCK::R1(H),XP(h)
- P(i);SBLOCK::QAB1(D),XP(f)
- Refutation
- S(e);XP(F)
- Try
- S(G);CHECK,XP(d)
- Vars
- K(g);P-FLIGHT::B(L)
- Refutation
- B(a);XS(G)
- Try
- P(B);XS(e)
- Threat
- R1(H),XP(h)
- Vars
- K(g);P-FLIGHT::R(H),XP(h)
- Refutation
- P(d);
- Try
- Actual
- S(E);
- Threat
- QAR1(D)
- Vars
- K(g);P-FLIGHT,P_PINP(J)::QAB1(D)
- S(e);N_GUARD,XP(F)::R1(H),XP(h)
- B(c);N_GUARD::QAB1(D),XB(c)
- S(e);N_GUARD::R1(H),XP(h)
- P(i);SBLOCK::B(M)
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).