MESON Chess Problem Database
Problem Display
PID: 145171 (1BB3nq/Q4pP1/8/K6N/5R2/6RN/pppppppk/7b w - - 0 1)
Dobrila, Arsen
The Problemist, 1989
#2
9 + 12
SOLUTION
- SOUND
- Sets
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Qg1#
- 1...f1S
- Tries
- 1.Rxg2+?
- 1...Kxg2
- 2.Rxf2#
- 2.Qxf2#
- 1...Bxg2!
- 1...Kxg2
- 1.Rg5?
- threat
- 2.Rxf2#
- 2.Rf3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rh4#
- 2.Rf6#
- 2.Rxf7#
- 1...a1Q+
- 2.Ra4#
- 1...a1R+
- 2.Ra4#
- 1...Qxg7
- 2.Rf6#
- 1...b1Q
- 2.Rb4#
- 1...b1R
- 2.Rb4#
- 1...c1Q
- 2.Rc4#
- 1...c1R
- 2.Rc4#
- 1...d1Q
- 2.Rd4#
- 1...d1R
- 2.Rd4#
- 1...e1Q
- 2.Re4#
- 1...e1R
- 2.Re4#
- 1...f1Q
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 1...f1S
- 2.Rxf1#
- 2.Qg1#
- 1...f1B
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rh4#
- 2.Rf6#
- 2.Rxf7#
- 2.Qg1#
- 1...f1R
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 1...g1Q
- 2.Rxf2#
- 1...g1R
- 2.Rxf2#
- 1...Qh6
- 2.Rf6#
- 1...Sf6
- 2.Rxf2#
- 2.Rf3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rh4#
- 2.Rxf6#
- 1...f6
- 2.Rxf2#
- 2.Rf3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rh4#
- 2.Rxf6#
- 1...f5!
- threat
- 1.Rxf2?
- threat
- 2.Rgxg2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rgf3#
- 2.Rg5#
- 2.Rg6#
- 1...Qxh5+
- 2.Rg5#
- 1...a1Q+
- 2.Ra3#
- 1...a1R+
- 2.Ra3#
- 1...Qxg7
- 2.Rgxg2#
- 2.Rxg7#
- 1...b1Q
- 2.Rgxg2#
- 2.Rb3#
- 1...b1R
- 2.Rgxg2#
- 2.Rb3#
- 1...c1Q
- 2.Rgxg2#
- 2.Rc3#
- 1...c1R
- 2.Rgxg2#
- 2.Rc3#
- 1...d1Q
- 2.Rgxg2#
- 2.Rd3#
- 1...d1R
- 2.Rgxg2#
- 2.Rd3#
- 1...e1Q
- 2.Rgxg2#
- 2.Re3#
- 1...e1R
- 2.Rgxg2#
- 2.Re3#
- 1...Qh6
- 2.Rgxg2#
- 1...f5!
- threat
- 1.Rxf7?
- threat
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rgf3#
- 2.Rg5#
- 2.Rg6#
- 1...Qxh5+
- 2.Rg5#
- 1...a1Q+
- 2.Ra3#
- 1...a1R+
- 2.Ra3#
- 1...Qxg7
- 2.Rgxg7#
- 1...b1Q
- 2.Rb3#
- 1...b1R
- 2.Rb3#
- 1...c1Q
- 2.Rc3#
- 1...c1R
- 2.Rc3#
- 1...d1Q
- 2.Rd3#
- 1...d1R
- 2.Rd3#
- 1...e1Q
- 2.Re3#
- 1...e1R
- 2.Re3#
- 1...f1Q
- 2.Rgf3#
- 1...f1S
- 2.Qg1#
- 1...f1R
- 2.Rgf3#
- 1...g1Q
- 2.Rxg1#
- 1...g1S
- 2.Rxg1#
- 2.Rg5#
- 2.Rg6#
- 1...g1B
- 2.Rxg1#
- 2.Rg5#
- 2.Rg6#
- 1...g1R
- 2.Rxg1#
- 1...Qh6!
- threat
- 1.Rxg2+?
- Keys
- 1.Rf6!
- threat
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rgf3#
- 2.Rg5#
- 2.Rgg6#
- 1...Qxh5+
- 2.Rg5#
- 1...a1Q+
- 2.Ra3#
- 1...a1R+
- 2.Ra3#
- 1...Qxg7
- 2.Rg5#
- 2.Rgg6#
- 2.Rxg7#
- 1...b1Q
- 2.Rb3#
- 1...b1R
- 2.Rb3#
- 1...c1Q
- 2.Rc3#
- 1...c1R
- 2.Rc3#
- 1...d1Q
- 2.Rd3#
- 1...d1R
- 2.Rd3#
- 1...e1Q
- 2.Re3#
- 1...e1R
- 2.Re3#
- 1...f1Q
- 2.Rgf3#
- 1...f1S
- 2.Qg1#
- 1...f1R
- 2.Rgf3#
- 1...g1Q
- 2.Rxg1#
- 1...g1S
- 2.Rxg1#
- 2.Rg5#
- 2.Rgg6#
- 1...g1B
- 2.Rxg1#
- 2.Rg5#
- 2.Rgg6#
- 1...g1R
- 2.Rxg1#
- 1...Qh6
- 2.Rg5#
- threat
- 1.Rf6!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 16
- REMOVED MATES = 1
- Sets
- P(g);OGATE::QAB1(F)
- Tries
- Try
- R(A);CHECK,XP(h)
- Refutation
- B(a);XR(A)
- Try
- R(A);
- Threat
- DUALS(10)
- Vars
- P(b);CHECK::B(H)+R(C)
- Q(l);XP(G)::B(H)+R(C)
- P(c);::B(H)+R(C)
- P(d);::B(H)+R(C)
- P(e);::B(H)+R(C)
- P(f);::B(H)+R(C)
- P(h);::B(H)+R(C),DCHECK,XP(g)
- Q(l);::B(H)+R(C)
- Refutation
- P(j);
- Try
- R(C);P_PINP(h),XP(g)
- Threat
- DUALS(9)
- Vars
- Q(l);CHECK,XS(E)::B(H)+R(A)
- P(b);CHECK::B(H)+R(A)
- Q(l);::B(H)+R(A),DCHECK,XP(h)
- Refutation
- P(j);
- Try
- R(C);XP(j)
- Threat
- DUALS(8)
- Vars
- Q(l);CHECK,XS(E)::B(H)+R(A)
- P(b);CHECK::B(H)+R(A)
- Q(l);OGATE,XP(G)::B(H)+R(A),XQ(l)
- P(c);::B(H)+R(A)
- P(d);::B(H)+R(A)
- P(e);::B(H)+R(A)
- P(f);::B(H)+R(A)
- P(g);::B(H)+R(A)
- P(g);OGATE::QAB1(F)
- P(h);OGATE::B(H)+R(A),XQ(h)
- P(h);OGATE::B(H)+R(A),XR(h)
- Refutation
- Q(l);
- Try
- Actual
- R(C);
- Threat
- DUALS(8)
- Vars
- Q(l);CHECK,XS(E)::B(H)+R(A)
- P(b);CHECK::B(H)+R(A)
- P(c);::B(H)+R(A)
- P(d);::B(H)+R(A)
- P(e);::B(H)+R(A)
- P(f);::B(H)+R(A)
- P(g);::B(H)+R(A)
- P(g);OGATE::QAB1(F)
- P(h);OGATE::B(H)+R(A),XQ(h)
- P(h);OGATE::B(H)+R(A),XR(h)
- Q(l);::B(H)+R(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).