MESON Chess Problem Database
Problem Display
PID: 71452 (B1RK4/pN1pP3/8/r2krPQ1/R7/2pP4/Nn6/4q3 w - - 0 1)
Dalla Rosa, Pedro
Faria, Oswaldo
Gaspar, Byron
Il Due Mosse, 1960
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Sxc3#
- 1...Qg3
- 2.Sxc3#
- 1...Qh4
- 2.Sxc3#
- 1...Qa1
- 2.Sxc3#
- 1...Qb1
- 2.Sxc3#
- 1...Qd1
- 2.Sxc3#
- 1...Qf1
- 2.Sxc3#
- 1...Qg1
- 2.Sxc3#
- 1...Qh1
- 2.Sxc3#
- 1...Qe2
- 2.Sxc3#
- 1...Qe3
- 2.Sxc3#
- 1...Qe4
- 2.Sxc3#
- 1...Rc5
- 2.Rxc5#
- 1...Ra6
- 2.Rc5#
- 1...d6
- 2.Sxa5#
- 2.Sc5#
- 1...Qf2
- Tries
- 1.Qe3?
- threat
- 2.Sb4#
- 2.Rd4#
- 2.Rxa5#
- 2.Qd4#
- 1...Qxe3
- 2.Sxc3#
- 1...Rxa4
- 2.Rc5#
- 2.Qc5#
- 1...Rxf5
- 2.Sb4#
- 2.Rd4#
- 2.Rxa5#
- 1...Sxd3
- 2.Rd4#
- 2.Qd4#
- 2.Qxd3#
- 1...Sxa4
- 2.Sb4#
- 1...Re4
- 2.Rxa5#
- 1...Qf2
- 2.Sxc3#
- 2.Sb4#
- 2.Rd4#
- 2.Rxa5#
- 1...Qh4
- 2.Sxc3#
- 2.Rxa5#
- 1...Qg1
- 2.Sxc3#
- 2.Sb4#
- 2.Rd4#
- 2.Rxa5#
- 1...Rb5
- 2.Rd4#
- 2.Qd4#
- 1...Rc5
- 2.Sb4#
- 2.Rd4#
- 2.Rxc5#
- 2.Qd4#
- 2.Qxc5#
- 1...Ra6
- 2.Sb4#
- 2.Rd4#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Sc4
- 2.Sb4#
- 2.dxc4#
- 1...c2
- 2.Rd4#
- 2.Qd4#
- 1...Rxe3!
- threat
- 1.Qf6?
- threat
- 2.Sxa5#
- 2.Sc5#
- 2.Sd6#
- 2.Qd6#
- 1...Rxa4
- 2.Qd6#
- 1...Sxa4
- 2.Qd6#
- 1...Rb5
- 2.Qd6#
- 1...Rc5
- 2.Sxc5#
- 2.Rxc5#
- 2.Qd6#
- 1...Ra6
- 2.Rc5#
- 1...Re6
- 2.Sb4#
- 2.Rd4#
- 2.Rxa5#
- 2.Qd4#
- 1...d6
- 2.Sxa5#
- 2.Sc5#
- 2.Sxd6#
- 2.Qxd6#
- 1...Sc4!
- threat
- 1.Qg2+?
- 1...Qe4
- 2.Sxc3#
- 1...Re4!
- 1...Qe4
- 1.Qe3?
- Keys
- 1.Qf4!
- threat
- 2.Sb4#
- 2.Rd4#
- 2.Rxa5#
- 2.Qd4#
- 1...Rxa4
- 2.Rc5#
- 1...Rxf5
- 2.Sc5#
- 2.Qd6#
- 1...Sxd3
- 2.Rd4#
- 2.Qc4#
- 2.Qd4#
- 1...Sxa4
- 2.Sb4#
- 2.Qc4#
- 1...Qf2
- 2.Sxc3#
- 2.Sb4#
- 1...Qh4
- 2.Sxc3#
- 2.Sb4#
- 2.Rd4#
- 2.Rxa5#
- 1...Qg1
- 2.Sxc3#
- 2.Sb4#
- 1...Qe3
- 2.Sxc3#
- 2.Sb4#
- 1...Qe4
- 2.Sxc3#
- 1...Rb5
- 2.Rd4#
- 2.Qd4#
- 1...Rc5
- 2.Sb4#
- 2.Rd4#
- 2.Rxc5#
- 2.Qd4#
- 1...Ra6
- 2.Sb4#
- 2.Rd4#
- 2.Rc5#
- 2.Qd4#
- 1...Re4
- 2.Sxa5#
- 2.Sc5#
- 2.Sd6#
- 2.Qd6#
- 1...Sc4
- 2.Sb4#
- 2.Qxc4#
- 2.dxc4#
- 1...c2
- 2.Rd4#
- 2.Qd4#
- threat
- 1.Qf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(a);N_GUARD::S(A),XP(c)
- R(d);N_GUARD::R1(I),XR(d)
- R(d);N_GUARD::R1(I)
- Tries
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- Q(a);N_GUARD,XQ(E)::S(A),XP(c)
- S(b);XR(C)::S(A)
- R(f);::R(C),XR(d)
- Refutation
- R(f);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- R(d);XR(C)::QAR1(E)
- S(b);XR(C)::QAR1(E)
- R(d);::QAR1(E)
- R(d);N_GUARD::R1(I)
- Refutation
- S(b);
- Try
- Q(E);CHECK
- Vars
- Q(a);P_SPINQ(a)::S(A),XP(c)
- Refutation
- R(f);P_SPINR(f)
- Try
- Actual
- Q(E);
- Threat
- DUALS(4)
- Vars
- R(d);N_GUARD,XR(C)::R1(I)
- Q(a);N_GUARD::S(A),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).