MESON Chess Problem Database
Problem Display
PID: 139837 (8/pKp5/1PQ1p1N1/Pp2Np1p/3kP1R1/rP2R3/1b1PP3/1q5b w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Sachsische Zeitung, 1979
#2
12 + 11
| 5402 | German Solving Championship | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 1...Qxe4
- 2.Rd3#
- 1...Qa1
- 2.Rd3#
- 1...Qc1
- 2.Rd3#
- 1...Qd1
- 2.Rd3#
- 1...Qe1
- 2.Rd3#
- 1...Qf1
- 2.Rd3#
- 1...Qg1
- 2.Rd3#
- 1...Bf3
- 2.Sxf3#
- 1...Bxe4
- 2.Sf3#
- 1...Bc1
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...b4
- 2.Qc4#
- 1...cxb6
- 2.Qd6#
- 1...Qa2
- Tries
- 1.Kxc7?
- threat
- 2.Qd6#
- 1...Qc1
- 2.Rd3#
- 1...Qc2!
- threat
- 1.Sd3?
- threat
- 2.Qd7#
- 2.Qc5#
- 1...Qxd3
- 2.Rxd3#
- 1...Rxb3
- 2.Qc5#
- 1...axb6
- 2.Qd7#
- 1...cxb6
- 2.Qd7#
- 2.Qd6#
- 1...Qc2
- 2.Qd7#
- 1...Qc1
- 2.Qd7#
- 1...Bxe4!
- threat
- 1.Rc3?
- threat
- 2.Qd7#
- 2.Qc5#
- 2.e3#
- 1...Qxe4
- 2.Rd3#
- 2.e3#
- 1...Bxe4
- 2.Sf3#
- 2.e3#
- 1...Bxc3
- 2.Qxc3#
- 2.e3#
- 1...fxg4
- 2.e3#
- 1...hxg4
- 2.e3#
- 1...axb6
- 2.Qd7#
- 2.e3#
- 1...cxb6
- 2.Qd7#
- 2.Qd6#
- 2.e3#
- 1...Qd3
- 2.Rxd3#
- 2.Qd7#
- 2.Qc5#
- 1...Qe1
- 2.Rd3#
- 2.Qd7#
- 2.Qc5#
- 1...Qg1
- 2.Rd3#
- 2.Qd7#
- 2.Qc5#
- 1...f4!
- threat
- 1.Qxb5?
- threat
- 2.Sc6#
- 2.Qc4#
- 2.Qb4#
- 1...Qxe4+
- 2.Sc6#
- 1...Bxe4+
- 2.Sc6#
- 1...Rxb3
- 2.Sc6#
- 2.Qc4#
- 1...fxe4
- 2.Sc6#
- 2.Qc4#
- 1...Qd3
- 2.Sc6#
- 2.Rxd3#
- 1...Qc1
- 2.Rd3#
- 1...Ra4
- 2.Sc6#
- 1...Bc3
- 2.Sc6#
- 2.Qc4#
- 1...c5
- 2.Sc6#
- 2.Qc4#
- 2.Qd7#
- 1...c6
- 2.Sxc6#
- 2.Qc4#
- 2.Qb4#
- 1...Qc2!
- threat
- 1.b4?
- threat
- 2.Qd7#
- 2.Qc5#
- 1...Bxe4
- 2.Sf3#
- 1...axb6
- 2.Qd7#
- 1...cxb6
- 2.Qd7#
- 2.Qd6#
- 1...Qa2
- 2.Qc5#
- 1...Qc2
- 2.Qd7#
- 1...Qc1
- 2.Qd7#
- 1...Rc3
- 2.Qd7#
- 1...Qxe4!
- threat
- 1.exf5+?
- 1...Qe4
- 2.Rd3#
- 1...Be4
- 2.Sf3#
- 1...hxg4!
- 1...Qe4
- 1.Kxc7?
- Keys
- 1.bxc7!
- threat
- 2.Qd6#
- 1...Qxe4
- 2.Rd3#
- 1...Bxe4
- 2.Sf3#
- threat
- 1.bxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 13
- Sets
- Q(a);N_GUARD::R1(D)
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);N_GUARD,P_PINQ(J),P_SPINQ(a),XP(E)::R1(D)
- B(b);N_GUARD::S(H),XB(b)
- B(b);N_GUARD,P_PINQ(J),P_SPINB(b),XP(E)::S(H)
- B(c);N_GUARD::QAB1(J)
- B(c);N_GUARD::QAB1(J),XB(c)
- P(f);N_GUARD::QAR1(J)
- P(k);N_GUARD,XP(I)::QAR2(J)
- Tries
- Try
- K(L);P-FLIGHT,XP(k)
- Threat
- QAR2(J)
- Vars
- Q(a);N_GUARD,P_PINQ(J)::R1(D)
- Refutation
- Q(a);P_PINQ(J)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(a);OGATE,XS(H)::R1(D),XQ(a)
- R(d);XP(C)::QAB1(J)
- P(j);XP(I)::QAR(J)
- Q(a);::QAR(J)
- Refutation
- B(b);P_PINQ(J),P_SPINB(b),XP(E)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- P(g);XR(F)::P(B)
- P(h);XR(F)::P(B)
- Refutation
- P(g);
- Try
- Q(J);P_SPINP(E),XP(f)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,P_SPINQ(a),XP(E)::S(H)
- B(b);CHECK,P_SPINB(b),XP(E)::S(H)
- Q(a);N_GUARD::R1(D)
- R(d);::S(H)
- Refutation
- Q(a);
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,P_PINQ(J),P_SPINB(b),XP(E)::S(H)
- P(j);XP(I)::QAR(J)
- Q(a);::QAB1(J)
- Q(a);::QAR(J)
- R(d);::QAR(J)
- Refutation
- Q(a);P_PINQ(J),P_SPINQ(a),XP(E)
- Try
- P(E);CHECK,P_SPINQ(J),XP(g)
- Vars
- Q(a);P_SPINQ(a)::R1(D)
- B(b);P_SPINB(b)::S(H)
- Refutation
- P(h);XR(F)
- Try
- Actual
- P(I);XP(k)
- Threat
- QAR2(J)
- Vars
- Q(a);N_GUARD,P_PINQ(J),P_SPINQ(a),XP(E)::R1(D)
- B(b);N_GUARD,P_PINQ(J),P_SPINB(b),XP(E)::S(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).