MESON Chess Problem Database
Problem Display
PID: 149393 (8/5R1p/6p1/4pp1P/RQq1rk1P/6NK/b1pPp1P1/b1B1N3 w - - 0 1)
Dawson, Thomas Rayner
Rivista del Club Argentino de Ajedrez, 1921
#2
11 + 11
| 15256 | TRD Scrapbook | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qb3
- 2.Qxe4#
- 2.d3#
- 1...Qd3
- 2.Sxd3#
- 1...Qb5
- 2.Qxe4#
- 2.d3#
- 1...Qd5
- 2.Sxe2#
- 2.d3#
- 1...Qa6
- 2.Qxe4#
- 2.d3#
- 1...Qe6
- 2.Sd3#
- 2.Sxe2#
- 2.Qxe4#
- 2.d3#
- 1...Qxf7
- 2.Sd3#
- 2.Sxe2#
- 2.d3#
- 1...Qc3
- 2.Qxe4#
- 2.dxc3#
- 1...Qxb4
- 2.Sd3#
- 1...Qc5
- 2.Sd3#
- 2.Sxe2#
- 2.Qxe4#
- 1...Qc6
- 2.Sd3#
- 2.Sxe2#
- 2.d3#
- 1...Qc7
- 2.Sd3#
- 2.Sxe2#
- 2.Qxe4#
- 2.d3#
- 1...Qc8
- 2.Sd3#
- 2.Sxe2#
- 2.Qxe4#
- 2.d3#
- 1...Re3
- 2.dxe3#
- 1...Rd4
- 2.d3#
- 1...gxh5
- 2.Sxh5#
- 2.Rxf5#
- 1...g5
- 2.Rxf5#
- 1...Qb3
- Tries
- 1.Sh1?
- threat
- 2.g3#
- 1...Qb3+
- 2.d3#
- 1...Qd3+
- 2.Sxd3#
- 1...Qc3+
- 2.dxc3#
- 1...Rd4
- 2.d3#
- 1...Re3+!
- threat
- 1.Sxe2+?
- 1...Qxe2
- 2.g3#
- 1...Rxe2!
- 1...Qxe2
- 1.Qc3?
- threat
- 2.Qf3#
- 1...Qxc3
- 2.Rxe4#
- 2.dxc3#
- 1...Qb3
- 2.Sd3#
- 2.Sxe2#
- 2.Rxe4#
- 2.d3#
- 1...Qd3
- 2.Sxd3#
- 1...Re3
- 2.Qxe3#
- 2.dxe3#
- 1...Bxc3!
- threat
- 1.Qe7?
- threat
- 2.Qg5#
- 1...g5
- 2.Rxf5#
- 2.Qxg5#
- 1...h6!
- threat
- 1.Qxc4?
- threat
- 2.Sd3#
- 2.Sxe2#
- 2.Qxe4#
- 2.d3#
- 1...Rxc4
- 2.Sd3#
- 2.d3#
- 2.d4#
- 1...Rd4
- 2.Sd3#
- 2.d3#
- 1...Bb2
- 2.Sd3#
- 2.Sxe2#
- 2.Qxe4#
- 1...Bc3
- 2.Sd3#
- 2.Sxe2#
- 2.Qxe4#
- 2.dxc3#
- 1...Bd4
- 2.Sd3#
- 1...Bxc4!
- threat
- 1.hxg6?
- threat
- 2.Sh5#
- 2.Rxf5#
- 1...Qxf7
- 2.Sd3#
- 2.Sxe2#
- 2.Sh5#
- 2.d3#
- 1...Qb3
- 2.Rxf5#
- 2.Qxe4#
- 2.d3#
- 1...Qd3
- 2.Sxd3#
- 2.Rxf5#
- 1...Qe6
- 2.Sd3#
- 2.Sxe2#
- 2.Sh5#
- 2.Qxe4#
- 2.d3#
- 1...Qc3
- 2.Rxf5#
- 2.Qxe4#
- 2.dxc3#
- 1...Qc8
- 2.Sd3#
- 2.Sxe2#
- 2.Sh5#
- 2.Qxe4#
- 2.d3#
- 1...Re3
- 2.Rxf5#
- 2.dxe3#
- 1...Rd4
- 2.Rxf5#
- 2.d3#
- 1...h5
- 2.Sxh5#
- 2.Rxf5#
- 1...hxg6!
- threat
- 1.Sh1?
- Keys
- 1.Sxf5!
- threat
- 2.g3#
- 1...Qb3+
- 2.d3#
- 1...Qd3+
- 2.Sxd3#
- 1...Qc3+
- 2.dxc3#
- 1...Re3+
- 2.Sg3#
- 1...Qxf7
- 2.Qxe4#
- 1...Rd4
- 2.d3#
- threat
- 1.Sxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(e);N_GUARD,P_PINS(E),P_SPINR(f)::S(B),XQ(e)
- Q(e);N_GUARD,XQ(H)::S(B)
- R(f);OGATE,P_PINS(E),P_SPINQ(e)::P(C),XR(f)
- R(f);N_GUARD::B(A)+P(C)
- P(j);N_GUARD::R1(K),XP(i)
- Tries
- Try
- S(E);
- Threat
- P(D)
- Vars
- Q(e);CHECK,P_SPINR(f)::B(A)+P(C)
- Q(e);CHECK,N_GUARD,P_SPINR(f)::S(B),XQ(e)
- Q(e);CHECK,OGATE,P_SPINR(f)::B(A)+P(C),XQ(e)
- R(f);N_GUARD::B(A)+P(C)
- Refutation
- R(f);CHECK,P_SPINQ(e)
- Try
- S(E);CHECK,XP(d)
- Vars
- Q(e);P_SPINR(f),XS(E)::P(D)
- Refutation
- R(f);P_SPINQ(e),XS(E)
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- Q(e);N_GUARD,P_PINS(E),P_SPINR(f)::S(B),XQ(e)
- Refutation
- B(a);XQ(H)
- Try
- Q(H);
- Threat
- QAB1(H)
- Refutation
- P(k);
- Try
- Q(H);P_PINR(f),XQ(e)
- Threat
- DUALS(4)
- Vars
- B(a);N_SPINR(f)::S(B)
- Refutation
- B(b);N_SPINR(f),XQ(H)
- Try
- P(J);XP(j)
- Threat
- DUALS(2)
- Refutation
- P(k);XP(J)
- Try
- Actual
- S(E);XP(i)
- Threat
- P(D)
- Vars
- Q(e);CHECK,P_SPINR(f)::B(A)+P(C)
- Q(e);CHECK,N_GUARD,P_SPINR(f)::S(B),XQ(e)
- Q(e);CHECK,OGATE,P_SPINR(f)::B(A)+P(C),XQ(e)
- R(f);CHECK,P_SPINQ(e)::R(K)+S(E)
- Q(e);OGATE,P_SPINR(f),XR(K)::QAR1(H),XR(f)
- R(f);N_GUARD::B(A)+P(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).