MESON Chess Problem Database
Problem Display
PID: 32646 (6BK/2Q4P/R1b1r3/bk6/RnN5/8/2P5/2N5 w - - 0 1)
Portilla, Vincente Maria Norberto
Source?, 0000
#2
9 + 5
| 3498 | Chess Problems by V. M. N. Portilla | 1873 |
SOLUTION
- SOUND
- Sets
- 1...Kxa4
- 2.Rxa5#
- 2.Qxa5#
- 1...Kxa6
- 2.Rxa5#
- 2.Qb6#
- 1...Re1
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re2
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re3
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re4
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re5
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rd6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rf6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rg6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rh6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re7
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re8
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Bh1
- 2.R4xa5#
- 2.R6xa5#
- 1...Bg2
- 2.R4xa5#
- 2.R6xa5#
- 1...Bf3
- 2.R4xa5#
- 2.R6xa5#
- 1...Be4
- 2.R4xa5#
- 2.R6xa5#
- 1...Bd5
- 2.R4xa5#
- 2.R6xa5#
- 1...Bb7
- 2.R4xa5#
- 2.R6xa5#
- 1...Bd7
- 2.R4xa5#
- 2.R6xa5#
- 1...Ba8
- 2.R4xa5#
- 2.R6xa5#
- 1...Be8
- 2.R4xa5#
- 2.R6xa5#
- 1...Sa2
- 2.R6xa5#
- 2.Qxa5#
- 1...Sxc2
- 2.R6xa5#
- 2.Qxa5#
- 1...Sd3
- 2.R6xa5#
- 2.Qxa5#
- 1...Sd5
- 2.R6xa5#
- 2.Qxa5#
- 1...Sxa6
- 2.Qxa5#
- 1...Kxa4
- Tries
- 1.Sd3?
- 1...Kxa4
- 2.Rxa5#
- 2.Qxa5#
- 1...Kxa6
- 2.Rxa5#
- 2.Qb6#
- 1...Bxc7
- 2.Sa3#
- 1...Sxc2
- 2.R6xa5#
- 2.Qxa5#
- 1...Sxd3
- 2.R6xa5#
- 2.Qxa5#
- 1...Sxa6
- 2.Qxa5#
- 1...Re1
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re2
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re3
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re4
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re5
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rd6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rf6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rg6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rh6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re7
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re8
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Bb6
- 2.Sa3#
- 1...Bh1
- 2.R4xa5#
- 2.R6xa5#
- 1...Bg2
- 2.R4xa5#
- 2.R6xa5#
- 1...Bf3
- 2.R4xa5#
- 2.R6xa5#
- 1...Be4
- 2.R4xa5#
- 2.R6xa5#
- 1...Bd5
- 2.R4xa5#
- 2.R6xa5#
- 1...Bb7
- 2.R4xa5#
- 2.R6xa5#
- 1...Bd7
- 2.R4xa5#
- 2.R6xa5#
- 1...Ba8
- 2.R4xa5#
- 2.R6xa5#
- 1...Be8
- 2.R4xa5#
- 2.R6xa5#
- 1...Sa2
- 2.R6xa5#
- 2.Qxa5#
- 1...Sd5
- 2.R6xa5#
- 2.Qxa5#
- 1...Kxc4!
- 1...Kxa4
- 1.Sa3+?
- 1...Kxa4
- 2.Rxa5#
- 2.Qxa5#
- 1...Kxa6
- 2.Rxa5#
- 1...Kc5!
- 1...Kxa4
- 1.Sd6+?
- 1...Kxa4
- 2.Rxa5#
- 2.Qxa5#
- 1...Kxa6
- 2.Rxa5#
- 2.Qxa5#
- 1...Rxd6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Kc5!
- 1...Kxa4
- 1.Qxc6+?
- 1...Rxc6
- 2.R4xa5#
- 2.R6xa5#
- 1...Sxc6!
- 1...Rxc6
- 1.Sd3?
- Keys
- 1.Sb3!
- 1...Kxa4
- 2.Rxa5#
- 2.Qxa5#
- 1...Kxc4
- 2.Qxc6#
- 1...Kxa6
- 2.Rxa5#
- 2.Qb6#
- 1...Bxc7
- 2.Sa3#
- 1...Sxc2
- 2.R6xa5#
- 2.Qxa5#
- 1...Sxa6
- 2.Qxa5#
- 1...Re1
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re2
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re3
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re4
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re5
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rd6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rf6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rg6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Rh6
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re7
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Re8
- 2.R4xa5#
- 2.R6xa5#
- 2.Qxa5#
- 1...Bb6
- 2.Sa3#
- 1...Bh1
- 2.R4xa5#
- 2.R6xa5#
- 1...Bg2
- 2.R4xa5#
- 2.R6xa5#
- 1...Bf3
- 2.R4xa5#
- 2.R6xa5#
- 1...Be4
- 2.R4xa5#
- 2.R6xa5#
- 1...Bd5
- 2.R4xa5#
- 2.R6xa5#
- 1...Bb7
- 2.R4xa5#
- 2.R6xa5#
- 1...Bd7
- 2.R4xa5#
- 2.R6xa5#
- 1...Ba8
- 2.R4xa5#
- 2.R6xa5#
- 1...Be8
- 2.R4xa5#
- 2.R6xa5#
- 1...Sa2
- 2.R6xa5#
- 2.Qxa5#
- 1...Sd3
- 2.R6xa5#
- 2.Qxa5#
- 1...Sd5
- 2.R6xa5#
- 2.Qxa5#
- 1...Kxa4
- 1.Sb3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(a);XR(E)::QAR1(F),XB(b)
- Tries
- Try
- S(A);
- Vars
- B(b);XQ(F)::S(D)
- S(a);XR(E)::QAR1(F),XB(b)
- B(b);::S(D)
- Refutation
- K(c);P_SPINB(d),P_SPINR(e),P_SPINS(a),S_FLIGHT,XS(D)
- Try
- S(D);CHECK
- Vars
- K(c);P_SPINB(b),S_FLIGHT,XR(E)::R1(C),XB(b)
- Refutation
- K(c);P-FLIGHT,P_SPINB(d)
- Try
- S(D);CHECK
- Refutation
- K(c);P-FLIGHT,P_SPINB(d)
- Try
- Q(F);CHECK,XB(d)
- Refutation
- S(a);XQ(F)
- Try
- Actual
- S(A);
- Vars
- K(c);P_SPINB(d),P_SPINR(e),P_SPINS(a),S_FLIGHT,XS(D)::QAR2(F),XB(d)
- B(b);XQ(F)::S(D)
- S(a);XR(E)::QAR1(F),XB(b)
- B(b);::S(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).