MESON Chess Problem Database
Problem Display
PID: 9573 (4N3/p2R1nrp/K4Qq1/2b3nr/4k1P1/4p2p/4P2B/1bN5 w - - 0 1)
Blake, Percy Francis
1st Prize, Western Daily Mercury, 1905-1906
#2
8 + 12
| 5424 | Versunkene Schatze | 1998 |
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Qxf5#
- 1...Qxf6+
- 2.Sxf6#
- 1...Bd3+
- 2.exd3#
- 1...Ba3
- 2.Rd4#
- 1...Bb4
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bb6
- 2.Qf4#
- 1...Be7
- 2.Rd4#
- 1...Bf8
- 2.Rd4#
- 1...Sf3
- 2.exf3#
- 1...Se6
- 2.Qf3#
- 1...Sd6
- 2.Qe5#
- 1...Qf5
- Tries
- 1.Sa2?
- threat
- 2.Sc3#
- 1...Qxf6+
- 2.Sxf6#
- 1...Bd3+
- 2.exd3#
- 1...Bb4
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bxa2!
- threat
- 1.Sd3?
- threat
- 2.Sxc5#
- 1...Qxf6+
- 2.Sxf6#
- 1...Bxd3+
- 2.exd3#
- 1...Sd6
- 2.Qe5#
- 1...Qf5
- 2.Qxf5#
- 1...Ba3
- 2.Rd4#
- 1...Bb4
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bb6
- 2.Qf4#
- 1...Be7
- 2.Rd4#
- 1...Bf8
- 2.Rd4#
- 1...Sf3
- 2.exf3#
- 1...Se6
- 2.Qf3#
- 1...Bd6!
- threat
- 1.Rd6?
- threat
- 2.Qf4#
- 1...Bd3+
- 2.exd3#
- 1...Qxf6
- 2.Sxf6#
- 1...Sxd6
- 2.Qe5#
- 1...Qf5
- 2.Qxf5#
- 1...Se6
- 2.Qf3#
- 1...Bxd6!
- threat
- 1.Qxg6+?
- 1...hxg6
- 2.Sf6#
- 1...Rxg6+!
- 1...hxg6
- 1.Sa2?
- Keys
- 1.Sb3!
- threat
- 2.Sxc5#
- 1...Qxf6+
- 2.Sxf6#
- 1...Bd3+
- 2.exd3#
- 1...Bd6
- 2.Qd4#
- 1...Sd6
- 2.Qe5#
- 1...Qf5
- 2.Qxf5#
- 1...Ba3
- 2.Rd4#
- 1...Bb4
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bb6
- 2.Qf4#
- 1...Be7
- 2.Rd4#
- 1...Bf8
- 2.Rd4#
- 1...Sf3
- 2.exf3#
- 1...Se6
- 2.Qf3#
- threat
- 1.Sb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(h);N_PINQ(F)::QAB1(F),XQ(h)
- Q(h);CHECK,XQ(F)::S(H),XQ(h)
- B(a);CHECK,OGATE::P(B),XB(a)
- B(e);N_GUARD::R1(G)
- B(e);N_GUARD::R1(G),XB(e)
- B(e);N_PINQ(F)::QAR1(F)
- S(f);OGATE::P(B),XS(f)
- S(f);N_PINQ(F)::QAB1(F)
- S(j);N_PINQ(F)::QAR1(F)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- Q(h);CHECK,XQ(F)::S(H),XQ(h)
- B(a);CHECK,OGATE::P(B),XB(a)
- B(e);N_GUARD::R1(G)
- B(e);N_GUARD::R1(G),XB(e)
- Refutation
- B(a);XS(A)
- Try
- S(A);
- Threat
- S(A),XB(e)
- Vars
- Q(h);CHECK,XQ(F)::S(H),XQ(h)
- B(a);CHECK,OGATE,XS(A)::P(B),XB(a)
- S(j);N_PINQ(F)::QAR1(F)
- Q(h);N_PINQ(F)::QAB1(F),XQ(h)
- B(e);N_GUARD::R1(G)
- B(e);N_GUARD::R1(G),XB(e)
- B(e);N_PINQ(F)::QAR1(F)
- S(f);OGATE::P(B),XS(f)
- S(f);N_PINQ(F)::QAB1(F)
- Refutation
- B(e);N_PINQ(F)
- Try
- R(G);N_SPINQ(F)
- Threat
- QAR1(F)
- Vars
- B(a);CHECK,OGATE::P(B),XB(a)
- Q(h);P_PINR(G),XQ(F)::S(H),XQ(h)
- S(j);N_GUARD,XR(G)::QAR1(F)
- Q(h);N_GUARD::QAB1(F),XQ(h)
- S(f);N_GUARD::QAB1(F)
- Refutation
- B(e);XR(G)
- Try
- Q(F);CHECK,N_SPINQ(F),XQ(h)
- Vars
- P(l);XQ(F)::S(H)
- Refutation
- R(k);CHECK,XQ(F)
- Try
- Actual
- S(A);
- Threat
- S(A),XB(e)
- Vars
- Q(h);CHECK,XQ(F)::S(H),XQ(h)
- B(a);CHECK,OGATE::P(B),XB(a)
- B(e);N_PINQ(F)::QAR1(F)
- S(j);N_PINQ(F)::QAR1(F)
- Q(h);N_PINQ(F)::QAB1(F),XQ(h)
- B(e);N_GUARD::R1(G)
- B(e);N_GUARD::R1(G),XB(e)
- S(f);OGATE::P(B),XS(f)
- S(f);N_PINQ(F)::QAB1(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).