MESON Chess Problem Database
Problem Display
PID: 103913 (n2k1r2/2rP1pp1/2RQ2n1/2B2BNb/1N4p1/2p3P1/1pP5/1R1K4 w - - 0 1)
Santiago, Joao Baptista
O Globo, 1934
#2
11 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxc6
- 2.Sxc6#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rxd7
- 2.Qxd7#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Se7
- 2.Qxe7#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f6
- 2.Se6#
- 1...Rxc6
- Tries
- 1.Ke1?
- 1...Rxc6
- 2.Sxc6#
- 1...Rxd7
- 2.Qb8#
- 2.Qxd7#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Se7
- 2.Qxe7#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f6
- 2.Se6#
- 1...Re8+!
- 1...Rxc6
- 1.Sa2?
- 1...Rxd7
- 2.Qxd7#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Se7
- 2.Qxe7#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f6
- 2.Se6#
- 1...Rxc6!
- 1...Rxd7
- 1.Sd3?
- 1...Rxd7
- 2.Qb8#
- 2.Qxd7#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Se7
- 2.Qxe7#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f6
- 2.Se6#
- 1...Rxc6!
- 1...Rxd7
- 1.Sd5?
- 1...Rxd7
- 2.Qb8#
- 2.Qxd7#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Se7
- 2.Qxe7#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f6
- 2.Se6#
- 1...Rxc6!
- 1...Rxd7
- 1.Sa6?
- 1...Rxd7
- 2.Qxd7#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Se7
- 2.Qxe7#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f6
- 2.Se6#
- 1...Rxc6!
- 1...Rxd7
- 1.Be4?
- 1...Rxc6
- 2.Sxc6#
- 1...Se7
- 2.Qxe7#
- 1...Ra7
- 2.Rc8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 1...Sh4
- 2.Qe7#
- 1...Se5
- 2.Qe7#
- 1...Sh8
- 2.Qe7#
- 1...Sb6
- 2.Qxc7#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Rxd7!
- 1...Rxc6
- 1.Bxg4?
- 1...Rxc6
- 2.Sxc6#
- 1...Rxd7
- 2.Qxd7#
- 1...Se7
- 2.Qxe7#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Bxg4+!
- 1...Rxc6
- 1.Bxg6?
- threat
- 2.Qe7#
- 1...Rxc6
- 2.Sxc6#
- 1...Re8
- 2.Sxf7#
- 1...Rxd7!
- threat
- 1.Rxb2?
- 1...Rxc6
- 2.Sxc6#
- 1...Rxd7
- 2.Qxd7#
- 1...Se7
- 2.Qxe7#
- 1...Ra7
- 2.Rc8#
- 2.Qb8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 2.Qxf8#
- 1...Sh4
- 2.Qe7#
- 2.Qxf8#
- 1...Se5
- 2.Qe7#
- 2.Qxf8#
- 1...Sh8
- 2.Qe7#
- 2.Qxf8#
- 1...Sb6
- 2.Qxc7#
- 1...f6
- 2.Se6#
- 1...cxb2!
- 1...Rxc6
- 1.Rxc7?
- threat
- 2.Sc6#
- 2.Rc8#
- 1...Sxc7
- 2.Sc6#
- 1...Se5
- 2.Rc8#
- 1...Sb6
- 2.Sc6#
- 1...Se7!
- threat
- 1.Qf6+?
- 1...Se7
- 2.Bxe7#
- 2.Qxe7#
- 1...gxf6!
- 1...Se7
- 1.Ke1?
- Keys
- 1.Bd3!
- 1...Rxc6
- 2.Sxc6#
- 1...Rxd7
- 2.Qb8#
- 1...Se7
- 2.Qxe7#
- 1...Ra7
- 2.Rc8#
- 1...Rb7
- 2.Rc8#
- 1...Rc8
- 2.Rxc8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sf4
- 2.Qe7#
- 1...Sh4
- 2.Qe7#
- 1...Se5
- 2.Qe7#
- 1...Sh8
- 2.Qe7#
- 1...Sb6
- 2.Qxc7#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Rxc6
- 1.Bd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(f);XR(I)::S(E),XR(f)
- R(f);OGATE::R1(I)
- R(f);OGATE,P_PINQ(J),P_SPINR(f),XP(K)::QAR1(J),XR(f)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J),XS(e)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(f);XR(I)::S(E),XR(f)
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J),XS(e)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- R(k);CHECK
- Try
- S(E);
- Vars
- R(f);OGATE,P_PINQ(J),P_SPINR(f),XP(K)::QAR1(J),XR(f)
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J),XS(e)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- R(f);XR(I)
- Try
- S(E);
- Vars
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J),XS(e)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- R(f);XR(I)
- Try
- S(E);
- Vars
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J),XS(e)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- R(f);XR(I)
- Try
- S(E);
- Vars
- R(f);OGATE,P_PINQ(J),P_SPINR(f),XP(K)::QAR1(J),XR(f)
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J),XS(e)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- R(f);XR(I)
- Try
- B(G);
- Vars
- R(f);XR(I)::S(E),XR(f)
- S(e);N_GUARD::QAB1(J),XS(e)
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- R(f);P_PINQ(J),P_SPINR(f),XP(K)
- Try
- B(G);P_SPINB(G),XP(c)
- Vars
- R(f);XR(I)::S(E),XR(f)
- R(f);OGATE,P_PINQ(J),P_SPINR(f),XP(K)::QAR1(J),XR(f)
- S(e);N_GUARD::QAB1(J),XS(e)
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- B(d);CHECK,XB(G)
- Try
- B(G);XS(e)
- Threat
- QAB1(J)
- Vars
- R(f);XR(I)::S(E),XR(f)
- R(k);N_GUARD::S(H),XP(g)
- Refutation
- R(f);P_PINQ(J),P_SPINR(f),XP(K)
- Try
- R(A);XP(a)
- Vars
- R(f);XR(I)::S(E),XR(f)
- R(f);OGATE,P_PINQ(J),P_SPINR(f),XP(K)::QAR1(J),XR(f)
- S(e);N_GUARD::QAB1(J),XS(e)
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::S(H)
- Refutation
- P(b);XR(A)
- Try
- R(I);XR(f)
- Threat
- DUALS(2)
- Vars
- S(i);XR(I)::S(E)
- S(e);::R1(I)
- S(i);::S(E)
- Refutation
- S(e);
- Try
- Q(J);CHECK
- Refutation
- P(h);XQ(J)
- Try
- Actual
- B(G);
- Vars
- R(f);XR(I)::S(E),XR(f)
- R(f);OGATE,P_SPINR(f),SBLOCK,XP(K)::QAR2(J)
- S(e);N_GUARD::QAB1(J),XS(e)
- R(f);OGATE::R1(I)
- R(k);N_GUARD::S(H),XP(g)
- S(e);N_GUARD::QAB1(J)
- S(i);N_GUARD::QAB1(J),XR(f)
- P(g);N_GUARD::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).