MESON Chess Problem Database
Problem Display
PID: 9935 (1q2bR2/b2P1N2/2rQ3P/5k2/4p2n/4R2K/B3N2P/B5r1 w - - 0 1)
Haring, Jacobus
4th Prize, BCPS-40 JT, 1958-1960
#2
11 + 8
| 3749 | FIDE Album (1959-1961) | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Rxa1
- 2.Sg3#
- 1...Rb1
- 2.Sg3#
- 1...Rgc1
- 2.Sg3#
- 1...Rd1
- 2.Sg3#
- 1...Re1
- 2.Sg3#
- 1...Rf1
- 2.Sg3#
- 1...Rh1
- 2.Sg3#
- 1...Rg3+
- 2.Sxg3#
- 1...Rcc1
- 2.Qe6#
- 2.Qf6#
- 1...Rc2
- 2.Qe6#
- 2.Qf6#
- 1...Rc3
- 2.Qe6#
- 1...Rc4
- 2.Qf6#
- 1...Rc5
- 2.Sd4#
- 2.Qe6#
- 2.Qf6#
- 1...Rb6
- 2.Sd4#
- 1...Rc7
- 2.Qe6#
- 2.Qf6#
- 1...Rc8
- 2.Qe6#
- 2.Qf6#
- 1...Bd4
- 2.Sxd4#
- 1...Sg2
- 2.Sg3#
- 1...Sg6
- 2.Be6#
- 1...Rxa1
- Tries
- 1.Rf3+?
- 1...exf3
- 2.Qd3#
- 1...Sxf3!
- 1...exf3
- 1.dxe8Q?
- threat
- 2.Qed7#
- 2.Qxe4#
- 2.Qee5#
- 2.Qee6#
- 1...Rg3+
- 2.Sxg3#
- 1...Qxd6
- 2.Qxe4#
- 1...Rxd6
- 2.Qxe4#
- 1...Bxe3
- 2.Qed7#
- 2.Qee5#
- 2.Qee6#
- 1...Qc7
- 2.Qxe4#
- 2.Qee5#
- 2.Qee6#
- 1...Qb1
- 2.Qed7#
- 2.Qee5#
- 2.Qee6#
- 1...Qb2
- 2.Qed7#
- 2.Qxe4#
- 2.Qee6#
- 1...Qb3
- 2.Qxe4#
- 2.Qee5#
- 1...Qb4
- 2.Qed7#
- 2.Qee5#
- 2.Qee6#
- 1...Qb5
- 2.Qed7#
- 2.Qxe4#
- 2.Qee6#
- 1...Qb7
- 2.Qxe4#
- 2.Qee5#
- 2.Qee6#
- 1...Qc8
- 2.Qxe4#
- 2.Qee5#
- 1...Qd8
- 2.Qxe4#
- 2.Qee5#
- 2.Qee6#
- 1...Rg4
- 2.Qed7#
- 2.Qee5#
- 2.Qee6#
- 1...Rg6
- 2.Qxe4#
- 2.Qee5#
- 1...Rc4
- 2.Qed7#
- 2.Qde6#
- 2.Qf6#
- 2.Qee5#
- 2.Qee6#
- 1...Rc5
- 2.Sd4#
- 2.Qed7#
- 2.Qde6#
- 2.Qf6#
- 2.Qxe4#
- 2.Qee6#
- 1...Rc7
- 2.Qde6#
- 2.Qf6#
- 2.Qxe4#
- 2.Qee5#
- 2.Qee6#
- 1...Bd4
- 2.Sxd4#
- 2.Qed7#
- 2.Qxe4#
- 2.Qee6#
- 1...Sf3
- 2.Qed7#
- 2.Qxe4#
- 2.Qee6#
- 1...Sg6
- 2.Be6#
- 2.Qed7#
- 2.Qxe4#
- 2.Qee6#
- 1...Qxe8!
- threat
- 1.Rf3+?
- Keys
- 1.Rg3!
- threat
- 2.Be6#
- 1...Rxg3+
- 2.Sxg3#
- 1...Qxd6
- 2.Sxd6#
- 1...Rxa1
- 2.Rg5#
- 1...Rxd6
- 2.Sxd6#
- 1...Bxd7
- 2.Sd8#
- 1...e3
- 2.Qd3#
- 1...Qb2
- 2.Qf4#
- 1...Qb3
- 2.Qe5#
- 1...Rc3
- 2.Qe6#
- 1...Rc4
- 2.Qf6#
- 1...Bd4
- 2.Sxd4#
- threat
- 1.Rg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD,XB(A)::S(C)
- R(a);N_GUARD::S(C)
- R(a);N_GUARD,P_PINP(D)::S(C)
- R(a);CHECK,N_GUARD::S(C),XR(a)
- R(e);N_GUARD,P_PINR(E)::QAB1(G)
- R(e);N_GUARD::QAR1(G)
- R(e);S_CUTB(f)::S(C)
- B(f);N_GUARD::S(C),XB(f)
- S(c);S_CUTR(a)::S(C)
- S(c);SBLOCK::B(B)
- Tries
- Try
- R(E);CHECK
- Vars
- P(b);S_CUTQ(g),S_CUTS(c),XR(E)::QAB(G)
- Refutation
- S(c);XR(E)
- Try
- P(I);XB(h)
- Threat
- DUALS(4)
- Vars
- R(a);CHECK,N_GUARD::S(C),XR(a)
- Q(g);XQ(G)::QAB1(I),XP(b)
- R(e);XQ(G)::QAB1(I),XP(b)
- Refutation
- Q(g);XQ(I)
- Try
- Actual
- R(E);
- Threat
- B(B)
- Vars
- R(a);CHECK,XR(E)::S(C),XR(a)
- Q(g);XQ(G)::R(K)+S(J),DCHECK,XQ(g)
- R(a);N_GUARD,XB(A)::R1(E)
- R(e);XQ(G)::R(K)+S(J),DCHECK,XR(e)
- B(h);N_GUARD,XP(I)::R(K)+S(J)
- P(b);OGATEB::QAB(G)
- Q(g);N_GUARD::QAR1(G)
- Q(g);N_GUARD,P_PINR(E)::QAR1(G)
- R(e);N_GUARD,P_PINR(E)::QAB1(G)
- R(e);N_GUARD::QAR1(G)
- B(f);N_GUARD::S(C),XB(f)
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).