MESON Chess Problem Database
Problem Display
PID: 239530 (5r2/2qr1nb1/1p5p/p2b1Q1P/2np1ppB/1N1NPk1P/K2pR3/5B2 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Magyar Sakkelet, 1951
#2
10 + 15
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qd8
- 2.Qxf4#
- 1...Qc5
- 2.Qxf4#
- 1...Qc6
- 2.Qxf4#
- 1...Qa7
- 2.Qxf4#
- 1...Qb7
- 2.Qxf4#
- 1...Qc8
- 2.Qxf4#
- 1...Rd6
- 2.Qxf4#
- 1...Be4
- 2.Qxg4#
- 1...Sxe3
- 2.Rf2#
- 1...Sce5
- 2.Qxf4#
- 1...Scd6
- 2.Qxf4#
- 1...Sfe5
- 2.Sxd4#
- 1...d1S
- 2.Se1#
- 1...d1B
- 2.Se1#
- 1...Qd8
- Tries
- 1.Sf2?
- threat
- 2.Qxg4#
- 1...gxh3
- 2.Qxh3#
- 2.Qg4#
- 1...Be6
- 2.Qe4#
- 1...Sce5
- 2.Qxf4#
- 1...Sfe5
- 2.Sxd4#
- 1...g3
- 2.Qg4#
- 1...Sxe3!
- threat
- 1.Sxf4?
- threat
- 2.Bg2#
- 1...Qxf4
- 2.Qxf4#
- 1...Sxe3
- 2.Rf2#
- 1...gxh3!
- threat
- 1.Sdc5?
- threat
- 2.Qxg4#
- 1...Qxc5
- 2.Qxf4#
- 1...Sxe3
- 2.Rf2#
- 1...gxh3
- 2.Qxh3#
- 1...Be6
- 2.Qe4#
- 1...Sce5
- 2.Qxf4#
- 1...Sfe5
- 2.Sxd4#
- 1...g3
- 2.Qg4#
- 1...bxc5!
- threat
- 1.Rg2?
- threat
- 2.Rg3#
- 1...g3
- 2.Rxg3#
- 1...Kxe3!
- threat
- 1.exd4?
- threat
- 2.Qxg4#
- 1...gxh3
- 2.Qxh3#
- 1...Be6
- 2.Qe4#
- 1...Se3
- 2.Rf2#
- 1...Sce5
- 2.Qxf4#
- 1...g3
- 2.Qg4#
- 1...Sfe5!
- threat
- 1.e4?
- threat
- 2.Qxg4#
- 1...gxh3
- 2.Qxh3#
- 1...Se3
- 2.Rf2#
- 1...Sce5
- 2.Qxf4#
- 1...Sfe5
- 2.Sxd4#
- 1...g3
- 2.Qg4#
- 1...Be6!
- threat
- 1.Sf2?
- Keys
- 1.exf4!
- threat
- 2.Qxg4#
- 1...Qxf4
- 2.Qxf4#
- 1...gxh3
- 2.Qxh3#
- 1...Be6
- 2.Qe4#
- 1...Se3
- 2.Rf2#
- 1...Sce5
- 2.fxe5#
- 1...Sfe5
- 2.Sxd4#
- 1...g3
- 2.Qg4#
- threat
- 1.exf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 11
- Sets
- Q(k);N_GUARD::QAR1(I),XP(e)
- R(l);S_CUTQ(k)::QAR1(I),XP(e)
- B(h);SBLOCK::QAB1(I),XP(f)
- S(c);P_PINS(D),SBLOCK,XP(F)::R1(C)
- S(c);P_PINS(D),S_CUTQ(k)::QAR1(I),XP(e)
- S(m);S_CUTB(n)::S(D),XP(d)
- P(a);N_GUARD::S(E)
- Tries
- Try
- S(E);
- Threat
- QAB1(I),XP(f)
- Vars
- B(h);N_GUARD::QAB1(I)
- S(c);P_PINS(D),S_CUTQ(k)::QAR1(I),XP(e)
- S(m);S_CUTB(n)::S(D),XP(d)
- P(f);::QAB1(I)
- Refutation
- S(c);P_PINS(D),XP(F)
- Try
- S(E);XP(e)
- Threat
- B(A)
- Vars
- Q(k);OGATE,P_SPINQ(k),XS(E)::QAR1(I),XQ(k)
- S(c);P_PINS(D),SBLOCK,XP(F)::R1(C)
- Refutation
- P(f);XP(G)
- Try
- S(E);
- Threat
- QAB1(I),XP(f)
- Vars
- Q(k);N_GUARD,XS(E)::QAR1(I),XP(e)
- S(c);P_PINS(D),SBLOCK,XP(F)::R1(C)
- P(f);OGATE,XP(G)::QAR2(I),XP(f)
- B(h);N_GUARD::QAB1(I)
- S(c);P_PINS(D),S_CUTQ(k)::QAR1(I),XP(e)
- S(m);S_CUTB(n)::S(D),XP(d)
- P(f);::QAB1(I)
- Refutation
- P(i);XS(E)
- Try
- R(C);
- Threat
- R1(C)
- Vars
- P(f);::R1(C),XP(f)
- Refutation
- K(b);N_SPINP(e),P-FLIGHT,XP(F)
- Try
- P(F);XP(d)
- Threat
- QAB1(I),XP(f)
- Vars
- P(f);OGATE,XP(G)::QAR2(I),XP(f)
- B(h);N_GUARD::QAB1(I)
- S(c);P_PINS(D),SBLOCK::R1(C)
- S(c);P_PINS(D),S_CUTQ(k)::QAR1(I),XP(e)
- P(f);::QAB1(I)
- Refutation
- S(m);
- Try
- P(F);
- Threat
- QAB1(I),XP(f)
- Vars
- P(f);OGATE,XP(G)::QAR2(I),XP(f)
- S(c);P_PINS(D),SBLOCK::R1(C)
- S(c);P_PINS(D),S_CUTQ(k)::QAR1(I),XP(e)
- S(m);S_CUTB(n)::S(D),XP(d)
- P(f);::QAB1(I)
- Refutation
- B(h);
- Try
- Actual
- P(F);XP(e)
- Threat
- QAB1(I),XP(f)
- Vars
- Q(k);OGATE,P_SPINQ(k),XP(F)::QAR1(I),XQ(k)
- P(f);OGATE,XP(G)::QAR2(I),XP(f)
- B(h);N_GUARD::QAB1(I)
- S(c);P_PINS(D),SBLOCK::R1(C)
- S(c);OGATE,P_PINS(D)::QAR(I)+P(F),XS(c)
- S(m);S_CUTB(n)::S(D),XP(d)
- P(f);::QAB1(I)
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).