MESON Chess Problem Database
Problem Display
PID: 239023 (8/3K1N2/p3Pp2/bP1k4/2p1Rp2/1Q6/1n1N4/1q4B1 w - - 0 1)
Petite, Efren
Problemas, 2014
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...axb5
- 2.Qxb5#
- 1...f5
- 2.Re5#
- 1...Sd1
- Tries
- 1.Rxc4?
- threat
- 2.Rc5#
- 1...Qxg1
- 2.Qf3#
- 1...Sxc4
- 2.Qxc4#
- 1...Bxd2!
- threat
- 1.Qa3?
- threat
- 2.Rd4#
- 2.Qc5#
- 2.Qd6#
- 1...Qxe4
- 2.Qc5#
- 2.Qd6#
- 1...Qxg1
- 2.Qd6#
- 1...Bxd2
- 2.Rd4#
- 1...Qd3
- 2.Qc5#
- 2.Qd6#
- 1...Bc3
- 2.Qc5#
- 2.Qd6#
- 1...Bb6
- 2.Qd6#
- 1...Bc7
- 2.Rd4#
- 2.Qc5#
- 1...Sd3
- 2.Rd4#
- 2.Qd6#
- 1...Sa4
- 2.Rd4#
- 2.Qd6#
- 1...Bb4!
- threat
- 1.Qb4?
- threat
- 2.Rd4#
- 2.Qc5#
- 2.Qd6#
- 1...Qxe4
- 2.Qc5#
- 2.Qd6#
- 1...Qxg1
- 2.Qd6#
- 1...Qd3
- 2.Qc5#
- 2.Qd6#
- 1...Bb6
- 2.Qd6#
- 1...Bc7
- 2.Rd4#
- 2.Qc5#
- 1...Sd3
- 2.Rd4#
- 2.Qd6#
- 2.Qxc4#
- 1...Sa4
- 2.Rd4#
- 2.Qd6#
- 2.Qxc4#
- 1...Bxb4!
- threat
- 1.Rxc4?
- Keys
- 1.Qf3!
- threat
- 2.Re5#
- 1...Qxe4
- 2.Qxe4#
- 1...Qxg1
- 2.Rxc4#
- threat
- 1.Qf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- S(b);N_GUARD::QAB1(C),XP(c)
- P(g);OGATE,XP(E)::QAR2(C),XP(g)
- P(h);N_GUARD::R1(D)
- Tries
- Try
- R(D);XP(c)
- Threat
- QAB(C)+R(D),DCHECK
- Vars
- Q(a);N_GUARD,XB(A)::QAB(C)
- S(b);OGATE,P_SPINS(b),XR(D)::QAB1(C),XS(b)
- Refutation
- B(e);XS(B)
- Try
- Q(C);N_PINP(c)
- Threat
- DUALS(3)
- Vars
- Q(a);XB(A)::QAR1(C)
- B(e);XS(B)::R1(D)
- B(e);::QAR1(C)
- Refutation
- B(e);
- Try
- Q(C);N_PINP(c)
- Threat
- DUALS(3)
- Vars
- Q(a);XB(A)::QAR1(C)
- B(e);::QAR1(C)
- Refutation
- B(e);XQ(C)
- Try
- Actual
- Q(C);N_PINP(c)
- Threat
- QAB(C)+R(D),DCHECK
- Vars
- Q(a);OGATE,P_SPINQ(a),XR(D)::QAB1(C),XQ(a)
- Q(a);N_GUARD,XB(A)::QAB(C)+R(D),XP(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).