MESON Chess Problem Database
Problem Display
PID: 169833 (r1NR3K/p1Rn3b/B2Bpp2/3k1n1Q/2p3N1/b3PP2/1qr5/8 w - - 0 1)
Rietveld, Johannes Jacob
2nd Prize, Bevrijdinastoern, 1945
#2
10 + 12
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Bb7#
- 1...Qc1
- 2.Bb7#
- 1...Qc3
- 2.Bb7#
- 1...Qd4
- 2.Bb7#
- 1...Qe5
- 2.Bb7#
- 1...Qa2
- 2.Bb7#
- 1...Qb7
- 2.Bxb7#
- 1...Rd2
- 2.Bxc4#
- 1...Re2
- 2.Bxc4#
- 1...Rf2
- 2.Bxc4#
- 1...Rg2
- 2.Bxc4#
- 1...Rh2
- 2.Bxc4#
- 1...Bb4
- 2.Bb7#
- 1...Sc5
- 2.Se7#
- 2.Bxc5#
- 1...Se5
- 2.Sxf6#
- 1...Sb6
- 2.Se7#
- 2.Bb7#
- 1...Sb8
- 2.Se7#
- 1...Sf8
- 2.Se7#
- 1...c3
- 2.Bc4#
- 1...e5
- 2.Qf7#
- 1...Qa1
- Tries
- 1.Sxf6+?
- 1...Sxf6
- 2.Se7#
- 1...Qxf6+!
- 1...Sxf6
- 1.Bb4?
- threat
- 2.Se7#
- 2.Bb7#
- 2.Rc5#
- 2.Rdxd7#
- 1...Rxc8
- 2.Bb7#
- 1...Bxb4
- 2.Bb7#
- 1...e5
- 2.Qf7#
- 1...Qd4
- 2.Se7#
- 2.Bb7#
- 2.Rdxd7#
- 1...Qe5
- 2.Bb7#
- 2.Rc5#
- 1...Rb8
- 2.Se7#
- 2.Rc5#
- 2.Rdxd7#
- 1...Qxb4!
- threat
- 1.Bc5?
- threat
- 2.Se7#
- 2.Rdxd7#
- 2.e4#
- 1...Rxc8
- 2.e4#
- 1...e5
- 2.Qf7#
- 1...Qd4
- 2.Se7#
- 2.Bb7#
- 2.Rdxd7#
- 1...Qe5
- 2.Bb7#
- 1...Qb5
- 2.Se7#
- 2.e4#
- 1...Qb6
- 2.Se7#
- 2.e4#
- 1...Re2
- 2.Se7#
- 2.Rdxd7#
- 1...Bxc5!
- threat
- 1.Rc5+?
- 1...Sxc5
- 2.Se7#
- 1...Bxc5!
- 1...Sxc5
- 1.Rdxd7?
- threat
- 2.Bxa3#
- 2.Bb4#
- 2.Bc5#
- 1...Bxd6
- 2.Rxd6#
- 1...e5
- 2.Qf7#
- 1...Qe5
- 2.Bb7#
- 1...Qb4
- 2.Sxf6#
- 2.Bxb4#
- 2.Bc5#
- 1...Qb5
- 2.Sxf6#
- 1...Qb6
- 2.Sxf6#
- 1...Bb4
- 2.Bb7#
- 2.Bxb4#
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 2.Rxc5#
- 1...Rxc8+!
- threat
- 1.Sxf6+?
- Keys
- 1.Be5!
- threat
- 2.e4#
- 1...Qxe5
- 2.Bb7#
- 1...Sxe3
- 2.Sxe3#
- 2.Sxf6#
- 1...fxe5
- 2.Sf6#
- 1...Qd4
- 2.Bb7#
- 1...Re2
- 2.Bxc4#
- 1...Sg3
- 2.Sxf6#
- 1...Sd4
- 2.Sxf6#
- 1...Sh4
- 2.Sxf6#
- 1...Sd6
- 2.Se7#
- 1...Sh6
- 2.Sxf6#
- 1...Se7
- 2.Sxf6#
- 1...Sg7
- 2.Sxf6#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 15
- Sets
- Q(a);N_GUARD::B(E)
- Q(a);N_GUARD,N_SPINS(f)::B(E)
- Q(a);N_GUARD::B(E),XQ(a)
- R(b);N_GUARD::B(E),XP(d)
- B(c);S_CUTQ(a)::B(E)
- S(j);N_GUARD,N_SPINS(f),S_CUTQ(a)::S(C),XP(h)
- S(j);::S(H)
- P(d);S_CUTR(b)::B(E)
- P(g);N_SPINS(f),OGATEB::QAB(D)
- Tries
- Try
- S(C);CHECK,P_SPINS(C),XP(h)
- Vars
- S(j);XS(C)::S(H)
- Refutation
- Q(a);CHECK,XS(C)
- Try
- B(F);
- Threat
- DUALS(4)
- Vars
- R(l);P_PINR(I),XS(H)::B(E)
- B(c);XB(F)::B(E)
- P(g);N_SPINS(f),OGATEB,P_SPINS(j)::QAB(D)
- Refutation
- Q(a);XB(F)
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- R(l);P_PINR(I),XS(H)::P(A)
- P(g);N_SPINS(f),OGATEB,P_SPINS(j)::QAB(D)
- Q(a);N_GUARD,N_SPINS(f),P_SPINS(j)::B(E)
- Refutation
- B(c);XB(F)
- Try
- R(G);CHECK
- Vars
- S(j);XR(G)::S(H)
- Refutation
- B(c);XR(G)
- Try
- R(I);P_SPINS(H),XS(j)
- Threat
- DUALS(3)
- Vars
- B(c);OGATE,P_SPINB(c),XB(F)::R1(I),XB(c)
- P(g);N_SPINS(f),OGATEB::QAB(D)
- Q(a);N_GUARD,N_SPINS(f)::B(E)
- Q(a);N_GUARD::S(C),XP(h)
- Refutation
- R(l);CHECK,XS(H)
- Try
- Actual
- B(F);N_PINS(f),P_PINS(j)
- Threat
- P(A)
- Vars
- Q(a);N_GUARD,XB(F)::B(E)
- P(h);SBLOCK,XB(F)::S(C)
- Q(a);N_GUARD::B(E)
- R(b);N_GUARD::B(E),XP(d)
- S(f);::S(C),XP(h)
- S(f);N_GUARD,N_SPINS(j),S_CUTB(c)::S(H)
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).