MESON Chess Problem Database
Problem Display
PID: 175195 (3rb3/B3N1Q1/5R1n/1Pq1bp2/NRPk4/1n2pP2/2P5/7K w - - 0 1)
Dahl, Anton M
The Times, 1902
#2
11 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.c5#
- 1...Qxa7
- 2.c5#
- 1...Rd5
- 2.cxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Sc6#
- 1...Ra8
- 2.Rd6#
- 1...Rb8
- 2.Rd6#
- 1...Rc8
- 2.Rd6#
- 1...Bh2
- 2.Rd6#
- 1...Bg3
- 2.Rd6#
- 1...Bf4
- 2.Rd6#
- 1...Bd6
- 2.Rxd6#
- 1...Bxf6
- 2.Qxf6#
- 1...Bc7
- 2.Rd6#
- 1...Bb8
- 2.Rd6#
- 1...Bxb5
- 2.cxb5#
- 1...Bh5
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 1...Bd7
- 2.Rd6#
- 1...Bf7
- 2.Sc6#
- 1...Sa1
- 2.Bxc5#
- 1...Sc1
- 2.Bxc5#
- 1...Sd2
- 2.Bxc5#
- 1...Sa5
- 2.Bxc5#
- 1...Sg4
- 2.Sxf5#
- 1...Sf7
- 2.Sxf5#
- 1...Sg8
- 2.Sxf5#
- 1...e2
- 2.Qg1#
- 1...f4
- 2.Rxf4#
- 1...Qb6
- Tries
- 1.Kg2?
- 1...Qxa7
- 2.c5#
- 1...Bxf6
- 2.Qxf6#
- 1...Bxb5
- 2.cxb5#
- 1...Bh2
- 2.Rd6#
- 1...Bg3
- 2.Rd6#
- 1...Bf4
- 2.Rd6#
- 1...Bd6
- 2.Rxd6#
- 1...Bc7
- 2.Rd6#
- 1...Bb8
- 2.Rd6#
- 1...Qb6
- 2.c5#
- 1...Rd5
- 2.cxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Sc6#
- 1...Ra8
- 2.Rd6#
- 1...Rb8
- 2.Rd6#
- 1...Rc8
- 2.Rd6#
- 1...Bh5
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 1...Bd7
- 2.Rd6#
- 1...Bf7
- 2.Sc6#
- 1...Sa1
- 2.Bxc5#
- 1...Sc1
- 2.Bxc5#
- 1...Sd2
- 2.Bxc5#
- 1...Sa5
- 2.Bxc5#
- 1...Sg4
- 2.Sxf5#
- 1...Sf7
- 2.Sxf5#
- 1...Sg8
- 2.Sxf5#
- 1...f4
- 2.Rxf4#
- 1...e2!
- 1...Qxa7
- 1.Rxf5?
- threat
- 2.Rf4#
- 2.Qxe5#
- 1...Sxf5
- 2.Sxf5#
- 1...e2
- 2.Qxe5#
- 2.Qg1#
- 1...Rd5
- 2.Rf4#
- 2.cxd5#
- 1...Bf6
- 2.Qxf6#
- 1...Bc6
- 2.Sxc6#
- 2.Qxe5#
- 1...Bg6
- 2.Sc6#
- 2.Qxe5#
- 1...Sd2
- 2.Bxc5#
- 2.Qxe5#
- 1...Sg4
- 2.Rf4#
- 1...Sf7
- 2.Rf4#
- 1...Bxg7!
- threat
- 1.Re6?
- threat
- 2.Qxe5#
- 1...Rd5
- 2.cxd5#
- 1...Bf6
- 2.Qxf6#
- 1...Sg4
- 2.Sxf5#
- 1...Sf7
- 2.Sxf5#
- 1...Bxg7!
- threat
- 1.Rxh6?
- threat
- 2.Sxf5#
- 1...Bf6
- 2.Qxf6#
- 1...Bg6
- 2.Sc6#
- 1...Bd7
- 2.Rd6#
- 1...f4
- 2.Sf5#
- 1...Bxg7!
- threat
- 1.Qh8?
- 1...Qxa7
- 2.c5#
- 1...Bxf6
- 2.Qxf6#
- 1...Bxb5
- 2.cxb5#
- 1...Bh2
- 2.Rd6#
- 1...Bg3
- 2.Rd6#
- 1...Bf4
- 2.Rd6#
- 1...Bd6
- 2.Rxd6#
- 1...Bc7
- 2.Rd6#
- 1...Bb8
- 2.Rd6#
- 1...Rd6
- 2.Rxd6#
- 1...Qb6
- 2.c5#
- 1...Rd5
- 2.cxd5#
- 1...Rd7
- 2.Sc6#
- 1...Ra8
- 2.Rd6#
- 1...Rb8
- 2.Rd6#
- 1...Rc8
- 2.Rd6#
- 1...Bh5
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 1...Bd7
- 2.Rd6#
- 1...Bf7
- 2.Sc6#
- 1...Sa1
- 2.Bxc5#
- 1...Sc1
- 2.Bxc5#
- 1...Sd2
- 2.Bxc5#
- 1...Sa5
- 2.Bxc5#
- 1...Sg4
- 2.Sxf5#
- 1...Sf7
- 2.Sxf5#
- 1...Sg8
- 2.Sxf5#
- 1...f4
- 2.Rxf4#
- 1...e2!
- 1...Qxa7
- 1.Kg2?
- Keys
- 1.Bb6!
- 1...Qxb6
- 2.c5#
- 1...Bxf6
- 2.Qxf6#
- 1...Bxb5
- 2.cxb5#
- 1...Bh2
- 2.Rd6#
- 1...Bg3
- 2.Rd6#
- 1...Bf4
- 2.Rd6#
- 1...Bd6
- 2.Rxd6#
- 1...Bc7
- 2.Rd6#
- 1...Bb8
- 2.Rd6#
- 1...e2
- 2.Qg1#
- 1...Rd5
- 2.cxd5#
- 1...Rd6
- 2.Rxd6#
- 1...Rd7
- 2.Sc6#
- 1...Ra8
- 2.Rd6#
- 1...Rb8
- 2.Rd6#
- 1...Rc8
- 2.Rd6#
- 1...Bh5
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 1...Bd7
- 2.Rd6#
- 1...Bf7
- 2.Sc6#
- 1...Sa1
- 2.Bxc5#
- 1...Sc1
- 2.Bxc5#
- 1...Sd2
- 2.Bxc5#
- 1...Sa5
- 2.Bxc5#
- 1...Sg4
- 2.Sxf5#
- 1...Sf7
- 2.Sxf5#
- 1...Sg8
- 2.Sxf5#
- 1...f4
- 2.Rxf4#
- 1...Qxb6
- 1.Bb6!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- Q(d);OGATE::R(E)+P(F)
- Q(d);N_SPINQ(d),OGATE,XB(I)::R(E)+P(F)
- R(h);OGATE::R(E)+P(F),XR(h)
- R(h);N_GUARD::R(H),XR(h)
- R(h);S_CUTB(i)::S(J)
- R(h);N_GUARD::R(H)
- B(e);::QAB(K)+R(H),DCHECK
- B(e);::QAB(K)+R(H),DCHECK,XB(e)
- B(e);OGATE,P_SPINB(e),XR(H)::QAB(K),XB(e)
- B(i);OGATE,XP(G)::R(E)+P(F),XB(i)
- B(i);N_GUARD::S(J)
- B(i);N_GUARD,P_PINP(C)::S(J),XB(i)
- B(i);S_CUTR(h)::R(H)
- S(a);N_GUARD::B(I),XQ(d)
- S(g);N_GUARD::S(J),XP(f)
- P(b);OGATEB::QAB(K)
- P(f);OGATE::R(H),XP(f)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(I)::R(E)+P(F)
- B(e);OGATE,P_SPINB(e),XR(H)::QAB(K),XB(e)
- B(i);OGATE,XP(G)::R(E)+P(F),XB(i)
- B(e);::QAB(K)+R(H),DCHECK
- B(e);::QAB(K)+R(H),DCHECK,XB(e)
- Q(d);OGATE::R(E)+P(F)
- R(h);OGATE::R(E)+P(F),XR(h)
- R(h);N_GUARD::R(H),XR(h)
- R(h);S_CUTB(i)::S(J)
- R(h);N_GUARD::R(H)
- B(i);N_GUARD::S(J)
- B(i);N_GUARD,P_PINP(C)::S(J),XB(i)
- B(i);S_CUTR(h)::R(H)
- S(a);N_GUARD::B(I),XQ(d)
- S(g);N_GUARD::S(J),XP(f)
- P(f);OGATE::R(H),XP(f)
- Refutation
- P(b);
- Try
- R(H);P_PINB(e),XP(f)
- Threat
- DUALS(2)
- Vars
- S(g);XR(H)::S(J),XS(g)
- B(e);OGATEB::QAB(K),XB(e)
- S(g);::R(H)
- Refutation
- B(e);N_SPINB(e),XQ(K)
- Try
- R(H);P_PINB(e)
- Threat
- QAB1(K),XB(e)
- Vars
- R(h);OGATE::R(E)+P(F),XR(h)
- B(e);OGATEB::QAB(K),XB(e)
- S(g);N_GUARD::S(J),XP(f)
- Refutation
- B(e);N_SPINB(e),XQ(K)
- Try
- R(H);P_PINB(e),XS(g)
- Threat
- S(J),XP(f)
- Vars
- B(e);OGATEB::QAB(K),XB(e)
- B(i);N_GUARD::S(J)
- B(i);S_CUTR(h)::R(H)
- P(f);::S(J)
- Refutation
- B(e);N_SPINB(e),XQ(K)
- Try
- Q(K);
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(I)::R(E)+P(F)
- B(e);OGATE,P_SPINB(e),XR(H)::QAB(K),XB(e)
- B(i);OGATE,XP(G)::R(E)+P(F),XB(i)
- B(e);::QAB(K)+R(H),DCHECK
- B(e);::QAB(K)+R(H),DCHECK,XB(e)
- R(h);N_GUARD::R(H),XR(h)
- Q(d);OGATE::R(E)+P(F)
- R(h);OGATE::R(E)+P(F),XR(h)
- R(h);S_CUTB(i)::S(J)
- R(h);N_GUARD::R(H)
- B(i);N_GUARD::S(J)
- B(i);N_GUARD,P_PINP(C)::S(J),XB(i)
- B(i);S_CUTR(h)::R(H)
- S(a);N_GUARD::B(I),XQ(d)
- S(g);N_GUARD::S(J),XP(f)
- P(f);OGATE::R(H),XP(f)
- Refutation
- P(b);
- Try
- Actual
- B(I);
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(I)::R(E)+P(F)
- B(e);OGATE,P_SPINB(e),XR(H)::QAB(K),XB(e)
- B(i);OGATE,XP(G)::R(E)+P(F),XB(i)
- B(e);::QAB(K)+R(H),DCHECK
- B(e);::QAB(K)+R(H),DCHECK,XB(e)
- P(b);OGATEB::QAB(K)
- R(h);OGATE::R(E)+P(F),XR(h)
- R(h);N_GUARD::R(H),XR(h)
- R(h);S_CUTB(i)::S(J)
- R(h);N_GUARD::R(H)
- B(i);N_GUARD::S(J)
- B(i);N_GUARD,P_PINP(C)::S(J),XB(i)
- B(i);S_CUTR(h)::R(H)
- S(a);N_GUARD::B(I),XQ(d)
- S(g);N_GUARD::S(J),XP(f)
- P(f);OGATE::R(H),XP(f)
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).