MESON Chess Problem Database
Problem Display
PID: 186074 (2r5/6B1/8/8/p7/3k4/Q3R1K1/8 w - - 0 1)
Novis Filho, Mario
Chess, 1958
#2
4 + 3
| 5454 | Near Snap | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rc2
- 2.Qxc2#
- 1...Rc4
- 2.Qd2#
- 1...Ra8
- 2.Qc2#
- 1...Rb8
- 2.Qc2#
- 1...Rd8
- 2.Qc2#
- 1...Re8
- 2.Qc2#
- 1...Rf8
- 2.Qc2#
- 1...Rg8
- 2.Qc2#
- 1...Rh8
- 2.Qc2#
- 1...Rc2
- Tries
- 1.Kf2?
- threat
- 2.Re3#
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 2.Qxc2#
- 1...Rc4
- 2.Re3#
- 2.Qd2#
- 1...Rc5
- 2.Re3#
- 1...Rd8
- 2.Re3#
- 2.Qc2#
- 1...Re8
- 2.Qd5#
- 2.Qc2#
- 1...Rf8+!
- threat
- 1.Kf3?
- threat
- 2.Rd2#
- 2.Re3#
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 2.Qxc2#
- 1...Rc4
- 2.Rd2#
- 2.Re3#
- 2.Qd2#
- 1...Rc5
- 2.Rd2#
- 2.Re3#
- 1...Rd8
- 2.Rd2#
- 2.Re3#
- 2.Qc2#
- 1...Re8
- 2.Rd2#
- 2.Qd5#
- 2.Qc2#
- 1...Rf8+!
- threat
- 1.Qxa4?
- threat
- 2.Qe4#
- 1...Rc4
- 2.Qd1#
- 1...Re8
- 2.Qc2#
- 2.Qb5#
- 2.Qa6#
- 1...Kxe2!
- threat
- 1.Kf2?
- Keys
- 1.Qe6!
- threat
- 2.Qe4#
- 1...Rc4
- 2.Qe3#
- 1...Re8
- 2.Qa6#
- threat
- 1.Qe6!
This anticipates 15957(1989)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- R(c);N_GUARD,P_PINR(B)::QAB1(A),XR(c)
- R(c);SBLOCK::QAR1(A)
- R(c);N_GUARD::QAB1(A)
- R(c);N_GUARD,P_PINB(D)::QAB1(A)
- Tries
- Try
- K(C);P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(c);::R1(B)
- Refutation
- R(c);CHECK
- Try
- K(C);S_FLIGHT
- Threat
- DUALS(3)
- Refutation
- R(c);CHECK
- Try
- Q(A);XP(b)
- Threat
- QAB1(A)
- Vars
- R(c);SBLOCK::QAR2(A)
- Refutation
- K(a);S_FLIGHT,XR(B)
- Try
- Actual
- Q(A);
- Threat
- QAB1(A)
- Vars
- R(c);SBLOCK::QAR1(A)
- R(c);N_GUARD::QAB(A)
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).