MESON Chess Problem Database
Problem Display
PID: 187772 (1n1Nb3/8/p1nR3q/P3k1p1/1p4P1/1N3P2/1K1Q4/8 w - - 0 1)
Lindquist, Carl Emil Richard
The Times, 1909
#2
8 + 8
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qg7
- 2.Re6#
- 2.Qh2#
- 1...Qf8
- 2.Re6#
- 1...Qh1
- 2.Re6#
- 1...Qh2
- 2.Re6#
- 2.Qxh2#
- 1...Qh3
- 2.Re6#
- 1...Qh4
- 2.Re6#
- 1...Qh5
- 2.Re6#
- 1...Qxd6
- 2.Qxg5#
- 1...Qe6
- 2.Rxe6#
- 1...Qf6
- 2.Rd5#
- 1...Qg6
- 2.Qh2#
- 1...Qh7
- 2.Re6#
- 1...Qh8
- 2.Re6#
- 1...Bh5
- 2.Qh2#
- 1...Bg6
- 2.Re6#
- 1...Bd7
- 2.Sf7#
- 1...Bf7
- 2.Sxf7#
- 1...Sd4
- 2.Qxd4#
- 1...Sxa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sxd8
- 2.Qd4#
- 1...Sd7
- 2.Sxc6#
- 1...Qg7
- Tries
- 1.Ka1?
- 1...Qxd6
- 2.Qxg5#
- 1...Sxa5
- 2.Qd4#
- 1...Sxd8
- 2.Qd4#
- 1...Qe6
- 2.Rxe6#
- 1...Sd4
- 2.Qxd4#
- 1...Qg7
- 2.Re6#
- 2.Qh2#
- 1...Qf8
- 2.Re6#
- 1...Qh2
- 2.Re6#
- 2.Qxh2#
- 1...Qh3
- 2.Re6#
- 1...Qh4
- 2.Re6#
- 1...Qh5
- 2.Re6#
- 1...Qf6
- 2.Rd5#
- 1...Qg6
- 2.Qh2#
- 1...Qh7
- 2.Re6#
- 1...Qh8
- 2.Re6#
- 1...Bh5
- 2.Qh2#
- 1...Bg6
- 2.Re6#
- 1...Bd7
- 2.Sf7#
- 1...Bf7
- 2.Sxf7#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sd7
- 2.Sxc6#
- 1...Qh1+!
- 1...Qxd6
- 1.Kc1?
- 1...Qxd6
- 2.Qxg5#
- 1...Sxa5
- 2.Qd4#
- 1...Sxd8
- 2.Qd4#
- 1...Qe6
- 2.Rxe6#
- 1...Sd4
- 2.Qxd4#
- 1...Qg7
- 2.Re6#
- 2.Qh2#
- 1...Qf8
- 2.Re6#
- 1...Qh2
- 2.Re6#
- 2.Qxh2#
- 1...Qh3
- 2.Re6#
- 1...Qh4
- 2.Re6#
- 1...Qh5
- 2.Re6#
- 1...Qf6
- 2.Rd5#
- 1...Qg6
- 2.Qh2#
- 1...Qh7
- 2.Re6#
- 1...Qh8
- 2.Re6#
- 1...Bh5
- 2.Qh2#
- 1...Bg6
- 2.Re6#
- 1...Bd7
- 2.Sf7#
- 1...Bf7
- 2.Sxf7#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sd7
- 2.Sxc6#
- 1...Qh1+!
- 1...Qxd6
- 1.Sxc6+?
- 1...Bxc6
- 2.Qd4#
- 1...Sxc6!
- 1...Bxc6
- 1.Rxc6?
- threat
- 2.Qd4#
- 1...Qd6
- 2.Qxg5#
- 2.Qxd6#
- 1...Qh2
- 2.Re6#
- 1...Sxc6!
- threat
- 1.Rxh6?
- threat
- 2.Re6#
- 2.Qxg5#
- 2.Qd6#
- 1...Sxd8
- 2.Qxg5#
- 2.Qd4#
- 2.Qd6#
- 1...Sd4
- 2.Qxd4#
- 1...Bd7
- 2.Sf7#
- 2.Qd6#
- 1...Bf7
- 2.Sxf7#
- 2.Qxg5#
- 2.Qd6#
- 1...Se7
- 2.Re6#
- 2.Qd4#
- 2.Qd6#
- 1...Bg6!
- threat
- 1.f4+?
- 1...gxf4
- 2.Qd5#
- 1...Ke4!
- 1...gxf4
- 1.Ka1?
- Keys
- 1.Ka2!
- 1...Qxd6
- 2.Qxg5#
- 1...Sxa5
- 2.Qd4#
- 1...Sxd8
- 2.Qd4#
- 1...Qe6
- 2.Rxe6#
- 1...Sd4
- 2.Qxd4#
- 1...Qg7
- 2.Re6#
- 2.Qh2#
- 1...Qf8
- 2.Re6#
- 1...Qh1
- 2.Re6#
- 1...Qh2
- 2.Re6#
- 2.Qxh2#
- 1...Qh3
- 2.Re6#
- 1...Qh4
- 2.Re6#
- 1...Qh5
- 2.Re6#
- 1...Qf6
- 2.Rd5#
- 1...Qg6
- 2.Qh2#
- 1...Qh7
- 2.Re6#
- 1...Qh8
- 2.Re6#
- 1...Bh5
- 2.Qh2#
- 1...Bg6
- 2.Re6#
- 1...Bd7
- 2.Sf7#
- 1...Bf7
- 2.Sxf7#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sd7
- 2.Sxc6#
- 1...Qxd6
- 1.Ka2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(f);N_GUARD::R1(G)
- Q(f);N_GUARD,SBLOCK,XR(G)::QAR2(B),XP(c)
- Q(f);N_GUARD::R1(G),XQ(f)
- Q(f);SBLOCK::R1(G)
- Q(f);N_GUARD::QAB(B)
- B(h);S_CUTQ(f)::QAB(B)
- B(h);S_CUTQ(f)::R1(G)
- B(h);N_GUARD::S(H)
- B(h);N_GUARD::S(H),XB(h)
- S(e);N_GUARD::QAB1(B),XS(e)
- S(e);N_GUARD,XP(F)::QAB1(B)
- S(e);N_GUARD::QAB1(B)
- S(e);N_GUARD,XS(H)::QAB1(B)
- S(g);N_GUARD,S_CUTB(h)::S(H),XS(e)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- Q(f);N_GUARD,SBLOCK,XR(G)::QAR2(B),XP(c)
- S(e);N_GUARD,XP(F)::QAB1(B)
- S(e);N_GUARD,XS(H)::QAB1(B)
- Q(f);N_GUARD::R1(G),XQ(f)
- S(e);N_GUARD::QAB1(B),XS(e)
- Q(f);N_GUARD::R1(G)
- Q(f);SBLOCK::R1(G)
- Q(f);N_GUARD::QAB(B)
- B(h);S_CUTQ(f)::QAB(B)
- B(h);S_CUTQ(f)::R1(G)
- B(h);N_GUARD::S(H)
- B(h);N_GUARD::S(H),XB(h)
- S(e);N_GUARD::QAB1(B)
- S(g);N_GUARD,S_CUTB(h)::S(H),XS(e)
- Refutation
- Q(f);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- Q(f);N_GUARD,SBLOCK,XR(G)::QAR2(B),XP(c)
- S(e);N_GUARD,XP(F)::QAB1(B)
- S(e);N_GUARD,XS(H)::QAB1(B)
- Q(f);N_GUARD::R1(G),XQ(f)
- S(e);N_GUARD::QAB1(B),XS(e)
- Q(f);N_GUARD::R1(G)
- Q(f);SBLOCK::R1(G)
- Q(f);N_GUARD::QAB(B)
- B(h);S_CUTQ(f)::QAB(B)
- B(h);S_CUTQ(f)::R1(G)
- B(h);N_GUARD::S(H)
- B(h);N_GUARD::S(H),XB(h)
- S(e);N_GUARD::QAB1(B)
- S(g);N_GUARD,S_CUTB(h)::S(H),XS(e)
- Refutation
- Q(f);CHECK
- Try
- S(H);CHECK,XS(e)
- Vars
- B(h);XS(H)::QAB1(B)
- Refutation
- S(g);XS(H)
- Try
- R(G);XS(e)
- Threat
- QAB1(B)
- Vars
- Q(f);N_GUARD,P_PINQ(B)::R1(G)
- Refutation
- S(g);XR(G)
- Try
- R(G);XQ(f)
- Threat
- DUALS(3)
- Vars
- S(e);N_GUARD::QAB1(B),XS(e)
- Refutation
- B(h);
- Try
- P(D);CHECK
- Vars
- P(c);SBLOCK,XP(D)::QAR1(B)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- K(A);P-FLIGHT
- Vars
- Q(f);N_GUARD,SBLOCK,XR(G)::QAR2(B),XP(c)
- S(e);N_GUARD,XP(F)::QAB1(B)
- S(e);N_GUARD,XS(H)::QAB1(B)
- Q(f);N_GUARD,P_PINS(C)::R1(G),XQ(f)
- S(e);N_GUARD::QAB1(B),XS(e)
- Q(f);N_GUARD::R1(G)
- Q(f);SBLOCK::R1(G)
- Q(f);N_GUARD::QAB(B)
- B(h);S_CUTQ(f)::QAB(B)
- B(h);S_CUTQ(f)::R1(G)
- B(h);N_GUARD::S(H)
- B(h);N_GUARD,P_PINS(C)::S(H),XB(h)
- S(e);N_GUARD::QAB1(B)
- S(g);N_GUARD,S_CUTB(h)::S(H),XS(e)
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).