MESON Chess Problem Database
Problem Display
PID: 110732 (NbB5/1P1r1RK1/2nrk2p/1R3p1P/p1Pp1p1n/B2Q1N2/4P3/8 w - - 0 1)
Rietveld, Johannes Jacob
4th HM., Centurini Ty. (L'Italia Scacchistica), 1924
#2
12 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sxf3
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 1...Sd8
- 2.Re5#
- 1...Rd5
- Tries
- 1.Kf8?
- 1...Sxf3
- 2.Qxf5#
- 1...Rd5
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Sg6+!
- 1...Sxf3
- 1.Kg8?
- 1...Sxf3
- 2.Qxf5#
- 1...Rd5
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Se7+!
- 1...Sxf3
- 1.Sxh4?
- threat
- 2.Qxf5#
- 1...Se7
- 2.Rf6#
- 1...Rd5!
- threat
- 1.Bb4?
- 1...Sxf3
- 2.Qxf5#
- 1...Sxb4
- 2.Re5#
- 1...Rd5
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 1...Sd8
- 2.Re5#
- 1...a3!
- 1...Sxf3
- 1.Ra5?
- 1...Sxf3
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Rd5
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 1...Sd8
- 2.Re5#
- 1...Sxa5!
- 1...Sxf3
- 1.Rc5?
- 1...Sxf3
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 1...Sd8
- 2.Re5#
- 1...Rd5!
- 1...Sxf3
- 1.Rd5?
- 1...Sxf3
- 2.Qxf5#
- 1...Sb4
- 2.Sxd4#
- 2.Re5#
- 1...Ba7
- 2.Sc7#
- 2.Rxd6#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sa5
- 2.Sxd4#
- 2.Re5#
- 1...Se5
- 2.Sxd4#
- 2.Rxe5#
- 1...Sa7
- 2.Sxd4#
- 2.Re5#
- 1...Se7
- 2.Sxd4#
- 2.Re5#
- 2.Rf6#
- 1...Sd8
- 2.Sxd4#
- 2.Re5#
- 1...Rxd5!
- 1...Sxf3
- 1.Rxf5?
- threat
- 2.Rf6#
- 1...Sxf5+
- 2.Qxf5#
- 1...Sxf3!
- threat
- 1.Rxd7?
- 1...Sxf3
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Rd5
- 2.Rdxd5#
- 2.Re7#
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Rxd6#
- 1...Sd8
- 2.Re5#
- 1...Rxd7+!
- 1...Sxf3
- 1.Re7+?
- 1...Sxe7
- 2.Re5#
- 1...Kxe7!
- 1...Sxe7
- 1.Qb1?
- 1...Sxf3
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Rd5
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 1...Sd8
- 2.Re5#
- 1...d3!
- 1...Sxf3
- 1.Qc2?
- 1...Sxf3
- 2.Qxf5#
- 1...Sb4
- 2.Re5#
- 1...Rd5
- 2.cxd5#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 1...Sd8
- 2.Re5#
- 1...d3!
- 1...Sxf3
- 1.Qe4+?
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...fxe4!
- 1...Se5
- 1.Qxd4?
- threat
- 2.Qf6#
- 1...Sxd4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Rxd4!
- threat
- 1.Kf8?
- Keys
- 1.Rb6!
- 1...Sxf3
- 2.Qxf5#
- 1...Sb4
- 2.Bxd7#
- 1...Rd5
- 2.Re7#
- 1...Ba7
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Sg2
- 2.Qxf5#
- 1...Sg6
- 2.Qxf5#
- 1...Sa5
- 2.Bxd7#
- 1...Se5
- 2.Sxd4#
- 1...Sa7
- 2.Bxd7#
- 1...Se7
- 2.Rf6#
- 1...Sd8
- 2.Bxd7#
- 1...Sxf3
- 1.Rb6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(g);OGATE::P(E),XR(g)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- S(f);N_GUARD::R1(F),XS(f)
- Tries
- Try
- K(J);N_SPINR(I),S_FLIGHT
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- R(g);OGATE::P(E),XR(g)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- S(d);CHECK
- Try
- K(J);N_SPINR(I),P-FLIGHT
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- R(g);OGATE::P(E),XR(g)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- S(f);CHECK
- Try
- S(D);XS(d)
- Threat
- QAB1(C),XP(e)
- Vars
- S(f);N_PINR(I),SBLOCK::R1(I)
- Refutation
- R(g);
- Try
- B(B);
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_GUARD,XB(B)::R1(F)
- R(g);OGATE::P(E),XR(g)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- P(a);
- Try
- R(F);
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- R(g);OGATE::P(E),XR(g)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- S(f);XR(F)
- Try
- R(F);
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- R(g);
- Try
- R(F);
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- Refutation
- R(g);XR(F)
- Try
- R(F);XP(e)
- Threat
- R1(F)
- Vars
- S(d);CHECK,OGATE,XR(F)::QAB1(C),XS(d)
- Refutation
- S(d);XS(D)
- Try
- R(I);N_SPINR(I),XR(j)
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- R(g);CHECK,P_SPINR(g),XR(I)
- Try
- R(I);CHECK
- Vars
- S(f);SBLOCK,XR(I)::R1(F)
- Refutation
- K(h);N_SPINR(j),P-FLIGHT,P_SPINR(g),XR(I)
- Try
- Q(C);
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- R(g);OGATE::P(E),XR(g)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- P(b);
- Try
- Q(C);
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F)
- R(g);OGATE::P(E),XR(g)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD::R1(F),XS(f)
- Refutation
- P(b);
- Try
- Q(C);CHECK
- Refutation
- P(e);XQ(C)
- Try
- Q(C);XP(b)
- Threat
- QAR1(C)
- Vars
- S(f);N_GUARD,XQ(C)::R1(F)
- Refutation
- R(g);XQ(C)
- Try
- Actual
- R(F);
- Vars
- S(d);N_GUARD,XS(D)::QAB1(C),XP(e)
- S(f);N_SPINR(j),P_SPINR(g)::B(L),XR(j)
- R(g);P_SPINS(f)::R1(I)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(d);N_GUARD::QAB1(C),XP(e)
- S(f);N_GUARD,N_SPINR(j),P_SPINR(g),SBLOCK::S(D),XP(b)
- S(f);N_PINR(I),N_SPINR(j),P_SPINR(g),SBLOCK::R1(I)
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).