MESON Chess Problem Database
Problem Display
PID: 169006 (8/3R1Q2/2b5/1p1p1Rp1/2k5/1N6/2PB1bK1/8 w - - 0 1)
Shpakovsky, Aleksandr Nikolaevich
SuperProblem, 2017
#2
7 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bxd7
- 2.Qxd5#
- 1...Bxd7
- Tries
- 1.Rf4+?
- 1...Bd4
- 2.Rxd4#
- 1...gxf4!
- 1...Bd4
- 1.Rdxd5?
- threat
- 2.Sa5#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bb6!
- threat
- 1.Qf6?
- threat
- 2.Qc3#
- 1...d4+
- 2.Qxc6#
- 1...Bd4
- 2.Qxd4#
- 1...b4!
- threat
- 1.Qe7?
- threat
- 2.Qb4#
- 2.Qe2#
- 1...b4
- 2.Qxb4#
- 2.Qe2#
- 1...Be3
- 2.Qb4#
- 1...Bc5
- 2.Qxc5#
- 2.Qe2#
- 1...d4+!
- threat
- 1.Qf8?
- threat
- 2.Qb4#
- 1...b4
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...d4+!
- threat
- 1.Rf4+?
- Keys
- 1.Rfxd5!
- threat
- 2.Sa5#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bb6
- 2.Qf1#
- threat
- 1.Rfxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- B(f);N_GUARD,XR(F)::QAB1(G),XP(d)
- Tries
- Try
- R(E);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::R1(E),XB(a)
- Refutation
- P(e);XR(E)
- Try
- R(F);P_SPINR(F),XP(d)
- Threat
- S(D)
- Vars
- B(f);CHECK,OGATE,P_SPINB(f),XR(F)::QAB1(G),XB(f)
- Refutation
- B(a);
- Try
- Q(G);N_PINP(d)
- Threat
- QAR1(G)
- Vars
- P(d);CHECK,S_CUTB(a)::QAR2(G),XB(f)
- B(a);N_GUARD::QAR1(G),XB(a)
- Refutation
- P(c);
- Try
- Q(G);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- B(a);::QAR1(G)
- Refutation
- P(d);CHECK
- Try
- Q(G);N_PINP(d)
- Threat
- QAR1(G)
- Vars
- P(c);::QAR1(G),XP(c)
- B(a);N_GUARD::QAR1(G),XB(a)
- Refutation
- P(d);CHECK
- Try
- Actual
- R(E);P_SPINR(E),XP(d)
- Threat
- S(D)
- Vars
- B(f);CHECK,OGATE,P_SPINB(f),XR(E)::QAB1(G),XB(f)
- B(a);OGATE::QAB(G)
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).