MESON Chess Problem Database
Problem Display
PID: 210163 (3Q1K2/4R2p/2r1R3/8/1b2N1Bk/7P/8/8 w - - 0 1)
Zaragoza, Luis
BCPS Website, 2020
#2
7 + 4
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Rh6#
- 1...Rc2
- 2.Rh6#
- 1...Rc3
- 2.Rh6#
- 1...Rc4
- 2.Rh6#
- 1...Rc5
- 2.Rxh7#
- 1...Rd6
- 2.Rd7#
- 2.Rxh7#
- 1...Rc7
- 2.Rh6#
- 1...Rc8
- 2.Rh6#
- 1...Be1
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Rf7#
- 2.Rg7#
- 2.Rxh7#
- 2.Re8#
- 1...Bd2
- 2.Rxh7#
- 1...Bc3
- 2.Rxh7#
- 1...Ba5
- 2.Rc7#
- 2.Rxh7#
- 1...Bd6
- 2.Rh6#
- 1...Bxe7+
- 2.Qxe7#
- 1...Rc1
- Tries
- 1.Rd6?
- threat
- 2.Re5#
- 2.Ree6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Red7#
- 2.Rf7#
- 2.Rg7#
- 2.Rxh7#
- 2.Re8#
- 1...Rxd6
- 2.Rxh7#
- 1...h5
- 2.Re5#
- 2.Ree6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Red7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Re8#
- 1...Rc5
- 2.Re5#
- 2.Rxh7#
- 1...Rc7
- 2.Rh6#
- 2.Rxc7#
- 2.Red7#
- 2.Rxh7#
- 1...Rc8
- 2.Rh6#
- 2.Rxh7#
- 1...Bd2
- 2.Rxh7#
- 1...Bc3
- 2.Re5#
- 2.Rxh7#
- 1...Ba5
- 2.Rc7#
- 2.Rxh7#
- 1...h6
- 2.Re5#
- 2.Ree6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Red7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Re8#
- 1...Bxd6!
- threat
- 1.Qd6?
- threat
- 2.Rh6#
- 2.Rxh7#
- 2.Qg3#
- 1...Rxd6
- 2.Rxh7#
- 1...Bxd6
- 2.Rh6#
- 1...h5
- 2.Qg3#
- 1...Rc3
- 2.Rh6#
- 2.Rxh7#
- 1...Rc5
- 2.Qg3#
- 1...Rc7
- 2.Rh6#
- 2.Qg3#
- 1...Be1
- 2.Rh6#
- 2.Rxh7#
- 1...Bd2
- 2.Qg3#
- 1...h6
- 2.Rxh6#
- 2.Qg3#
- 1...Rc8+!
- threat
- 1.Qe8?
- threat
- 2.Qh5#
- 1...Bxe7+
- 2.Qxe7#
- 1...h5
- 2.Qxh5#
- 1...Rc8
- 2.Rh6#
- 1...Rc5!
- threat
- 1.Rd6?
- Keys
- 1.Qc7!
- threat
- 2.Qg3#
- 1...Bxe7+
- 2.Qxe7#
- 1...Rxc7
- 2.Rh6#
- 1...Rc3
- 2.Rh6#
- 1...Rd6
- 2.Rxh7#
- 1...Be1
- 2.Rxh7#
- 1...Bd6
- 2.Rh6#
- threat
- 1.Qc7!
This is a version of 210162
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(c);N_GUARD::R(D)
- R(c);N_PINR(E)::QAB(F)+R(E),DCHECK,XP(d)
- R(c);N_GUARD,P_PINQ(F)::R(D)
- B(a);N_PINR(E)::QAB(F)+R(E),DCHECK,XP(d)
- B(a);S_CUTR(c)::R(D)
- B(a);CHECK,OGATE,P_SPINB(a),XR(E)::QAB(F),XB(a)
- Tries
- Try
- R(D);N_SPINR(E)
- Threat
- DUALS(10)
- Vars
- R(c);XR(D)::QAB(F)+R(E),DCHECK,XP(d)
- B(a);::QAB(F)+R(E),DCHECK,XP(d)
- Refutation
- B(a);P_PINR(E),XR(D)
- Try
- Q(F);N_SPINR(E)
- Threat
- DUALS(3)
- Vars
- R(c);XQ(F)::R(E),XP(d)
- B(a);P_PINR(E),XQ(F)::R(D)
- P(d);::QAB1(F)
- R(c);::QAB1(F)
- B(a);::QAB1(F)
- Refutation
- R(c);CHECK
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- B(a);CHECK,OGATE,XR(E)::QAB(F),XB(a)
- P(d);::QAR1(F),XP(d)
- R(c);N_GUARD,P_PINQ(F)::R(D)
- Refutation
- R(c);N_PINR(E)
- Try
- Actual
- Q(F);
- Threat
- QAB1(F)
- Vars
- B(a);CHECK,OGATE,XR(E)::QAB(F),XB(a)
- R(c);N_GUARD,XQ(F)::R(D)
- R(c);N_GUARD::R(D)
- R(c);N_PINR(E)::R(E),XP(d)
- B(a);N_PINR(E)::R(E),XP(d)
- B(a);S_CUTR(c)::R(D)
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).