MESON Chess Problem Database
Problem Display
PID: 233963 (4Rr2/1Kp3rN/2N5/3b4/Q5pn/1pp1Bk2/5p1P/5B2 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Skakbladet, 1987
#2
8 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rg5
- 2.Sxg5#
- 1...Rd7
- 2.Sg5#
- 1...Rgf7
- 2.Sg5#
- 1...Rf4
- 2.Qxf4#
- 1...Rxe8
- 2.Qf4#
- 1...Rg8
- 2.Qf4#
- 1...Rh8
- 2.Qf4#
- 1...Bc4
- 2.Sd4#
- 1...Be4
- 2.Qxe4#
- 1...Bxc6+
- 2.Qxc6#
- 1...Bf7
- 2.Sd4#
- 2.Qe4#
- 2.Qf4#
- 1...Bg8
- 2.Sd4#
- 2.Qe4#
- 1...Sf5
- 2.Qf4#
- 1...Sg6
- 2.Sg5#
- 1...b2
- 2.Qd1#
- 1...Rg5
- Tries
- 1.Bd2?
- threat
- 2.Re3#
- 1...Bxc6+
- 2.Qxc6#
- 1...Rxe8
- 2.Qf4#
- 1...Sg2
- 2.Be2#
- 1...Re7
- 2.Sg5#
- 1...Bc4
- 2.Sd4#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Se5#
- 1...Sf5
- 2.Qf4#
- 1...cxd2!
- threat
- 1.Bg5?
- threat
- 2.Re3#
- 1...Bxc6+
- 2.Qxc6#
- 1...Rxg5
- 2.Sxg5#
- 1...Rxe8
- 2.Qf4#
- 1...Sg2
- 2.Be2#
- 1...Rf4
- 2.Qxf4#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Se5#
- 1...Sf5
- 2.Qf4#
- 1...Re7!
- threat
- 1.Bh6?
- threat
- 2.Re3#
- 1...Bxc6+
- 2.Qxc6#
- 1...Rxe8
- 2.Qf4#
- 1...Sg2
- 2.Be2#
- 1...Rg5
- 2.Sxg5#
- 1...Rf4
- 2.Qxf4#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Se5#
- 1...Sf5
- 2.Qf4#
- 1...Re7!
- threat
- 1.Rxf8+?
- 1...Kxe3
- 2.Qd4#
- 2.Qf4#
- 1...Bf7
- 2.Qf4#
- 1...Sf5
- 2.Qf4#
- 1...Rf7!
- 1...Kxe3
- 1.Qd4?
- threat
- 2.Qd1#
- 2.Qxd5#
- 1...Rxe8
- 2.Qf4#
- 1...Rg5
- 2.Sxg5#
- 2.Qd1#
- 1...Rd7
- 2.Sg5#
- 2.Qd1#
- 1...Re7
- 2.Sg5#
- 1...Rf4
- 2.Qd1#
- 2.Qxf4#
- 1...Rf5
- 2.Qd1#
- 1...Bc4
- 2.Se5#
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Se5#
- 1...Bf7
- 2.Se5#
- 2.Qd1#
- 2.Qe4#
- 2.Qf4#
- 1...Bg8
- 2.Se5#
- 2.Qd1#
- 2.Qe4#
- 1...c2
- 2.Qxd5#
- 1...g3
- 2.Qd1#
- 1...Bxc6+!
- threat
- 1.Bd2?
- Keys
- 1.Bc1!
- threat
- 2.Re3#
- 1...Bxc6+
- 2.Qxc6#
- 1...Rxe8
- 2.Qf4#
- 1...Sg2
- 2.Be2#
- 1...Re7
- 2.Sg5#
- 1...Bc4
- 2.Sd4#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Se5#
- 1...Sf5
- 2.Qf4#
- threat
- 1.Bc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- R(j);N_GUARD::QAR1(D),XR(j)
- R(j);N_GUARD,XR(H)::QAR1(D)
- R(j);N_GUARD::QAR1(D)
- B(g);N_PINS(E)::S(E)
- B(g);N_GUARD::QAB1(D),XB(g)
- B(g);CHECK,OGATE,XS(E)::QAB(D),XB(g)
- S(f);S_CUTR(j)::QAR1(D)
- S(f);S_CUTR(i)::S(G)
- P(b);OGATE::QAB(D)
- Tries
- Try
- B(C);
- Threat
- R1(H)
- Vars
- B(g);CHECK,OGATE,XS(E)::QAB(D),XB(g)
- R(j);N_GUARD,XR(H)::QAR1(D)
- S(f);SBLOCK::B(A)
- R(i);N_GUARD::S(G)
- B(g);N_PINS(E)::S(E)
- B(g);N_GUARD::QAB1(D),XB(g)
- S(f);S_CUTR(j)::QAR1(D)
- Refutation
- P(c);XB(C)
- Try
- B(C);
- Threat
- R1(H)
- Vars
- B(g);CHECK,OGATE,XS(E)::QAB(D),XB(g)
- R(i);XB(C)::S(G),XR(i)
- R(j);N_GUARD,XR(H)::QAR1(D)
- S(f);SBLOCK::B(A)
- R(j);N_GUARD::QAR1(D),XR(j)
- B(g);N_GUARD::QAB1(D),XB(g)
- B(g);N_PINS(E)::S(E)
- S(f);S_CUTR(j)::QAR1(D)
- Refutation
- R(i);
- Try
- B(C);
- Threat
- R1(H)
- Vars
- B(g);CHECK,OGATE,XS(E)::QAB(D),XB(g)
- R(j);N_GUARD,XR(H)::QAR1(D)
- S(f);SBLOCK::B(A)
- R(i);N_GUARD::S(G),XR(i)
- R(j);N_GUARD::QAR1(D),XR(j)
- B(g);N_GUARD::QAB1(D),XB(g)
- B(g);N_PINS(E)::S(E)
- S(f);S_CUTR(j)::QAR1(D)
- Refutation
- R(i);
- Try
- R(H);CHECK,XR(j)
- Vars
- B(g);N_PINS(E),P_SPINB(g)::QAR1(D)
- S(f);P_SPINS(f)::QAR1(D)
- Refutation
- R(i);P_SPINR(i)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(j);N_GUARD,XR(H)::QAR1(D)
- R(i);N_GUARD::S(G)
- R(j);::QAB(D)
- B(g);N_GUARD::QAB1(D),XB(g)
- B(g);N_PINS(E)::S(E)
- P(c);::QAB(D),XB(g)
- P(e);::QAB(D)
- Refutation
- B(g);CHECK,XS(E)
- Try
- Actual
- B(C);
- Threat
- R1(H)
- Vars
- B(g);CHECK,OGATE,XS(E)::QAB(D),XB(g)
- R(j);N_GUARD,XR(H)::QAR1(D)
- S(f);SBLOCK::B(A)
- R(i);N_GUARD::S(G)
- B(g);N_PINS(E)::S(E)
- B(g);N_GUARD::QAB1(D),XB(g)
- S(f);S_CUTR(j)::QAR1(D)
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).