MESON Chess Problem Database
Problem Display
PID: 245108 (2n2R2/b5K1/B6P/5N2/3PkB1R/n2N4/1rP3PP/6Qq w - - 0 1)
Haring, Jacobus
De Maasbode, 1955
#2
13 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxg2+
- 2.Qxg2#
- 1...Ra2
- 2.Bb7#
- 1...Rb7+
- 2.Bxb7#
- 1...Bxd4+
- 2.Qxd4#
- 1...Bb6
- 2.Bb7#
- 1...Sb5
- 2.Bb7#
- 1...Qxg2+
- Tries
- 1.Sb4?
- threat
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bd3#
- 2.Bb7#
- 2.Qe3#
- 1...Qxg2+
- 2.Qxg2#
- 1...Bxd4+
- 2.Qxd4#
- 1...Qxg1
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bd3#
- 2.Bb7#
- 1...Qxh2
- 2.Bxh2#
- 2.Bd3#
- 2.Bb7#
- 2.Qe3#
- 2.Qe1#
- 1...Rxc2
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bd3#
- 2.Qe3#
- 1...Sxc2
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bd3#
- 2.Bb7#
- 1...Rb3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bb7#
- 1...Bb8
- 2.Sg3#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 2.Bd3#
- 2.Bb7#
- 2.Qe3#
- 1...Sc4
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bb7#
- 1...Sb5
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bb7#
- 2.Qe3#
- 1...Sb6
- 2.Sg3#
- 2.Sd6#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bd3#
- 2.Qe3#
- 1...Sd6
- 2.Sg3#
- 2.Sxd6#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bxd6#
- 2.Bd3#
- 2.Qe3#
- 1...Se7
- 2.Sg3#
- 2.Sd6#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Bd3#
- 2.Qe3#
- 1...Rxb4!
- threat
- 1.Se7?
- threat
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Qe3#
- 1...Qxg2+
- 2.Bg3#
- 1...Bxd4+
- 2.Be5#
- 1...Qxg1
- 2.Bc1#
- 2.Bd2#
- 2.Bg5#
- 1...Qxh2
- 2.Bxh2#
- 2.Qe3#
- 1...Sxc2
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...Rb8
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 2.Qe3#
- 1...Bb8
- 2.Sc5#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 2.Qe3#
- 1...Sc4
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...Sd6
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bxd6#
- 2.Qe3#
- 1...Sxe7!
- threat
- 1.Bc4?
- threat
- 2.Sf2#
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Qe3#
- 1...Qxg2+
- 2.Qxg2#
- 1...Rb7+
- 2.Bc7#
- 1...Bxd4+
- 2.Be5#
- 2.Qxd4#
- 1...Qxg1
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...Qxh2
- 2.Sf2#
- 2.Bxh2#
- 2.Qe3#
- 2.Qe1#
- 1...Rxc2
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 2.Qe3#
- 1...Sxc2
- 2.Sf2#
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...Rb8
- 2.Sf2#
- 2.Sg3#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 2.Qe3#
- 1...Bb8
- 2.Sf2#
- 2.Sc5#
- 2.Sg3#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 2.Qe3#
- 1...Sd6
- 2.Sf2#
- 2.Sg3#
- 2.Sxd6#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bxd6#
- 2.Qe3#
- 1...Sxc4!
- threat
- 1.Sb4?
- Keys
- 1.Se3!
- threat
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bb8#
- 1...Qxg2+
- 2.Bg3#
- 1...Rb7+
- 2.Bc7#
- 1...Bxd4+
- 2.Be5#
- 1...Kxd4
- 2.Be5#
- 1...Qxg1
- 2.Bg5#
- 1...Qxh2
- 2.Bxh2#
- 1...Rb8
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 1...Bb8
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 2.Bxb8#
- 1...Sd6
- 2.Bg3#
- 2.Be5#
- 2.Bg5#
- 2.Bxd6#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(a);CHECK,OGATE,XP(C)::QAB(A),XQ(a)
- R(b);N_GUARD::B(J)
- R(b);CHECK,N_GUARD::B(J),XR(b)
- B(e);CHECK,OGATE,XP(F)::QAR1(A),XB(e)
- B(e);S_CUTR(b)::B(J)
- S(c);S_CUTR(b)::B(J)
- Tries
- Try
- S(E);
- Threat
- DUALS(13)
- Vars
- Q(a);CHECK,OGATE,XP(C)::QAB(A),XQ(a)
- B(e);CHECK,OGATE,XP(F)::QAR1(A),XB(e)
- Refutation
- R(b);XS(E)
- Try
- S(I);
- Threat
- DUALS(10)
- Vars
- Q(a);CHECK,XP(C)::R(H)+B(G)
- B(e);CHECK,XP(F)::R(H)+B(G)
- Refutation
- S(f);XS(I)
- Try
- B(J);
- Threat
- DUALS(12)
- Vars
- Q(a);CHECK,OGATE,XP(C)::QAB(A),XQ(a)
- R(b);CHECK::R(H)+B(G)
- Refutation
- S(c);XB(J)
- Try
- Actual
- S(I);
- Threat
- DUALS(6)
- Vars
- Q(a);CHECK,XP(C)::R(H)+B(G)
- R(b);CHECK::R(H)+B(G)
- B(e);CHECK,XP(F)::R(H)+B(G)
- K(d);P-FLIGHT,XP(F)::R(H)+B(G),DCHECK
- Q(a);P_PINP(C),XQ(A)::R(H)+B(G)
- Q(a);OGATE,XP(D)::R(H)+B(G),XQ(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).