MESON Chess Problem Database
Problem Display
PID: 274559 (7q/rn2P1B1/5R2/2p3p1/pN2p3/P1kNP3/Qb3P1n/3K4 w - - 0 1)
Maleika, Gerhard
Pat a Mat, 2023
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qh4
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qh5+
- 2.Rf3#
- 1...Qh6
- 2.Rxh6#
- 1...Qa8
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qb8
- 2.Rd6#
- 1...Qc8
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qd8
- 2.Rd6#
- 1...Qe8
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qf8
- 2.Rxf8#
- 1...Ba1
- 2.Qc2#
- 1...Bc1
- 2.Qc2#
- 1...Bxa3
- 2.Qc2#
- 1...exd3
- 2.Sd5#
- 1...c4
- 2.Qxb2#
- 1...Qh3
- Tries
- 1.Se1?
- threat
- 2.Sd5#
- 1...Qh5+
- 2.Rf3#
- 1...Qd8+
- 2.Rd6#
- 1...cxb4
- 2.Rc6#
- 1...Qg8!
- threat
- 1.Sxb2?
- threat
- 2.Sd5#
- 1...Qh5+
- 2.Rf3#
- 1...Qd8+
- 2.Rd6#
- 1...cxb4
- 2.Rc6#
- 1...Qg8!
- threat
- 1.Sxc5?
- threat
- 2.Sd5#
- 2.Sxe4#
- 1...Qh5+
- 2.Rf3#
- 1...Qd8+
- 2.Rd6#
- 1...Bxa3
- 2.Sd5#
- 1...Qg8
- 2.Sxe4#
- 1...Qh4
- 2.Sd5#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qh7
- 2.Sd5#
- 1...Sd6
- 2.Sd5#
- 1...Sxc5!
- threat
- 1.Bxh8?
- threat
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...cxb4
- 2.Rd6#
- 1...Ra6
- 2.Rxa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 1...Ra8
- 2.Rf8#
- 1...Sf3
- 2.Rxf3#
- 1...Sd6
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rxd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Sg4!
- threat
- 1.Qd5?
- threat
- 2.Sa2#
- 1...Qh5+
- 2.Rf3#
- 1...cxb4
- 2.Rc6#
- 1...c4!
- threat
- 1.Se1?
- Keys
- 1.Sc1!
- threat
- 2.Se2#
- 2.Sd5#
- 1...Qh5+
- 2.Rf3#
- 1...Qd8+
- 2.Rd6#
- 1...Bxc1
- 2.Qc2#
- 1...Bxa3
- 2.Sd5#
- 1...cxb4
- 2.Rc6#
- 1...Qg8
- 2.Se2#
- threat
- 1.Sc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(j);CHECK,N_GUARD::B(J)+R(H)
- Q(j);N_GUARD::B(J)+R(H),XQ(j)
- Q(j);N_GUARD::B(J)+R(H)
- Q(j);N_GUARD,P_PINS(E)::B(J)+R(H)
- B(a);OGATE::QAR1(B)
- B(a);OGATE,XP(D)::QAR1(B)
- P(e);SBLOCK,XS(E)::S(G)
- P(f);SBLOCK::QAB1(B),XB(a)
- Tries
- Try
- S(E);
- Threat
- S(G)
- Vars
- Q(j);CHECK,N_GUARD::B(J)+R(H)
- P(f);XS(G)::B(J)+R(H),DCHECK
- Refutation
- Q(j);
- Try
- S(E);XB(a)
- Threat
- S(G)
- Vars
- Q(j);CHECK,N_GUARD::B(J)+R(H)
- P(f);XS(G)::B(J)+R(H),DCHECK
- Refutation
- Q(j);
- Try
- S(E);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD::B(J)+R(H)
- B(a);XP(D)::S(G)
- Q(j);::S(E),XP(e)
- Q(j);::S(G)
- S(i);::S(G)
- Refutation
- S(i);XS(E)
- Try
- B(J);XQ(j)
- Threat
- DUALS(12)
- Vars
- P(f);XS(G)::B(J)+R(H)
- R(h);::B(J)+R(H)
- S(b);::B(J)+R(H),XS(b)
- Refutation
- S(b);
- Try
- Q(B);
- Threat
- S(G)
- Vars
- Q(j);CHECK,N_GUARD::B(J)+R(H)
- P(f);XS(G)::B(J)+R(H),DCHECK
- Refutation
- P(f);
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD::B(J)+R(H)
- B(a);OGATE,XS(E)::QAR1(B)
- B(a);XP(D)::S(G)
- P(f);XS(G)::B(J)+R(H),DCHECK
- Q(j);::S(E)
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).