MESON Chess Problem Database
Problem Display
PID: 118356 (8/6KQ/1B4N1/R1q5/2P1k1n1/5R2/1N2n1B1/8 w - - 0 1)
Rasmussen, Knud AK
Toronto Telegram, 1947
#2
9 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Rd3#
- 1...Qg1
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Re3#
- 2.Rf4#
- 1...Qf2
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rxf2#
- 2.Re3#
- 2.Rf4#
- 1...Qa3
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rfxa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rf4#
- 1...Qe3
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rxe3#
- 2.Rf4#
- 1...Qb4
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qd4+
- 2.Se5#
- 1...Qxb6
- 2.Rd3#
- 1...Qd6
- 2.Rf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe7+
- 2.Sxe7#
- 2.Rf7#
- 1...Qf8+
- 2.Sxf8#
- 2.Rxf8#
- 1...Qxc4
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qxa5
- 2.Rf1#
- 2.Rf2#
- 2.Rf4#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qb5
- 2.Rf1#
- 2.Rf2#
- 2.Rf4#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qd5
- 2.Rf1#
- 2.Rf2#
- 2.Rf4#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe5+
- 2.Sxe5#
- 2.Rf6#
- 1...Qf5
- 2.Re3#
- 2.Rf4#
- 2.Rfxf5#
- 1...Qg5
- 2.Rf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qh5
- 2.Rf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qc6
- 2.Rf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qc7+
- 2.Se7#
- 2.Rf7#
- 1...Qc8
- 2.Rf1#
- 2.Rf2#
- 2.Rfa3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Se3
- 2.Rf4#
- 1...Kd4
- Tries
- 1.Se5+?
- 1...Kd4
- 2.Sc6#
- 1...Kxe5!
- 1...Kd4
- 1.Se7+?
- 1...Kd4
- 2.Sc6#
- 1...Qf5
- 2.Rf1#
- 2.Rf2#
- 2.Rfxf5#
- 2.Qxf5#
- 1...Ke5!
- 1...Kd4
- 1.Bxc5?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf4#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Sf4
- 2.Rxf4#
- 1...Sg1
- 2.Rf4#
- 1...Sf2
- 2.Rxf2#
- 2.Rf4#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Sh2
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...Sf6
- 2.Rf1#
- 2.Rf2#
- 2.Rf4#
- 2.Rxf6#
- 1...Sd4!
- threat
- 1.Rfa3+?
- 1...Kd4
- 2.Bxc5#
- 2.Rd3#
- 1...Kf5!
- 1...Kd4
- 1.Rb3+?
- 1...Kd4
- 2.Bxc5#
- 2.Rd3#
- 1...Kf5!
- 1...Kd4
- 1.Rc3+?
- 1...Kd4
- 2.Rd3#
- 1...Kf5!
- 1...Kd4
- 1.Re3+?
- 1...Kd4
- 2.Bxc5#
- 2.Rd3#
- 1...Kf5
- 2.Qh5#
- 1...Kxe3!
- 1...Kd4
- 1.Rg3+?
- 1...Kd4
- 2.Bxc5#
- 2.Rd3#
- 1...Kf5!
- 1...Kd4
- 1.Rh3+?
- 1...Kd4
- 2.Bxc5#
- 2.Rd3#
- 1...Kf5!
- 1...Kd4
- 1.Raa3?
- threat
- 2.Rf4#
- 1...Qd4+
- 2.Rf6#
- 1...Qe7+
- 2.Rf7#
- 1...Qf8+
- 2.Rxf8#
- 1...Qe5+
- 2.Rf6#
- 1...Qc7+
- 2.Rf7#
- 1...Kd4
- 2.Rfd3#
- 1...Sf4
- 2.Rxf4#
- 1...Sc3!
- threat
- 1.Se5+?
- Keys
- 1.Qh3!
- threat
- 2.Rf4#
- 1...Qd4+
- 2.Rf6#
- 1...Qe7+
- 2.Rf7#
- 1...Qf8+
- 2.Rxf8#
- 1...Qe5+
- 2.Rf6#
- 1...Qc7+
- 2.Rf7#
- 1...Kd4
- 2.Rd3#
- 1...Sf4
- 2.Rxf4#
- 1...Sg3
- 2.Qxg4#
- threat
- 1.Qh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- K(b);P-FLIGHT,P_SPINQ(d)::R1(C)
- Q(d);CHECK::QAB(I)+S(G)
- Q(d);XB(F)::B(B)+R(C)
- S(c);SBLOCK::B(B)+R(C),DCHECK
- Tries
- Try
- S(G);CHECK
- Vars
- K(b);P-FLIGHT,P_SPINQ(d)::S(G)
- Refutation
- K(b);P-FLIGHT,P_SPINQ(d),XS(G)
- Try
- S(G);CHECK
- Vars
- K(b);P-FLIGHT,P_SPINQ(d)::S(G)
- Refutation
- K(b);P-FLIGHT,P_SPINQ(d)
- Try
- B(F);XQ(d)
- Threat
- DUALS(6)
- Vars
- S(a);::B(B)+R(C),DCHECK,XS(a)
- S(a);::B(B)+R(C),DCHECK
- S(c);::B(B)+R(C),DCHECK
- Refutation
- S(a);
- Try
- R(C);CHECK
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- R(C);CHECK
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- R(C);CHECK
- Vars
- K(b);P-FLIGHT,P_SPINQ(d)::R1(C)
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- R(C);CHECK
- Vars
- K(b);P_SPINQ(d),S_FLIGHT::QAR2(I)
- Refutation
- K(b);P-FLIGHT,P_SPINQ(d),XR(C)
- Try
- R(C);CHECK
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- R(C);CHECK
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- R(E);
- Threat
- B(B)+R(C),DCHECK
- Vars
- Q(d);CHECK::B(B)+R(C)
- Q(d);CHECK::B(B)+R(C),XQ(d)
- K(b);P-FLIGHT,P_SPINQ(d)::R1(C)
- S(a);::B(B)+R(C),DCHECK,XS(a)
- Refutation
- S(a);
- Try
- Actual
- Q(I);
- Threat
- B(B)+R(C),DCHECK
- Vars
- Q(d);CHECK::B(B)+R(C)
- Q(d);CHECK::B(B)+R(C),XQ(d)
- K(b);P-FLIGHT,P_SPINQ(d)::R1(C)
- S(a);::B(B)+R(C),DCHECK,XS(a)
- S(a);N_GUARD::QAR2(I),XS(c)
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).