MESON Chess Problem Database
Problem Display
PID: 147779 (4N3/8/p3p2N/4k1r1/1r1Rp1b1/2B1P2p/6RK/b5Q1 w - - 0 1)
Mendes de Moraes Filho, Feliciano
Source?, 0000
#2
8 + 9
| 35 | L'Italia Scacchistica | 1930 |
SOLUTION
- SOUND
- Sets
- 1...Rb2
- 2.Rd1#
- 2.Rdd2#
- 2.Rd3#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Rf5
- 2.Sxg4#
- 1...Bd1
- 2.Rxg5#
- 1...Be2
- 2.Rxg5#
- 1...Bf3
- 2.Rxg5#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Rxg5#
- 1...Rb2
- Tries
- 1.Rb2?
- threat
- 2.Qg3#
- 1...Rxb2+
- 2.Rd2#
- 1...Rf5
- 2.Sxg4#
- 1...Bd1
- 2.Qxg5#
- 1...Be2
- 2.Qxg5#
- 1...Bf3
- 2.Qxg5#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Qxg5#
- 1...Rxd4!
- threat
- 1.Rc2?
- threat
- 2.Qg3#
- 1...Rf5
- 2.Sxg4#
- 1...Bd1
- 2.Qxg5#
- 1...Be2
- 2.Qxg5#
- 1...Bf3
- 2.Qxg5#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Qxg5#
- 1...Rxd4!
- threat
- 1.Rgd2?
- threat
- 2.Rd5#
- 2.Qg3#
- 1...Bxc3
- 2.Qg3#
- 1...Rf5
- 2.Sxg4#
- 2.Rd5#
- 1...Bd1
- 2.Rd5#
- 2.Qxg5#
- 1...Be2
- 2.Rd5#
- 2.Qxg5#
- 1...Bf3
- 2.Rd5#
- 2.Qxg5#
- 1...Bf5
- 2.Sf7#
- 2.Rd5#
- 1...Bh5
- 2.Rd5#
- 2.Qxg5#
- 1...Rxd4!
- threat
- 1.Re2?
- threat
- 2.Qg3#
- 1...Bxe2
- 2.Qxg5#
- 1...Rf5
- 2.Sxg4#
- 1...Bf3
- 2.Qxg5#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Qxg5#
- 1...Rxd4!
- threat
- 1.Rf2?
- threat
- 2.Sf7#
- 2.Qg3#
- 1...Rb7
- 2.Qg3#
- 1...Rf5
- 2.Sxg4#
- 1...Rg7
- 2.Qg3#
- 1...Bd1
- 2.Sf7#
- 2.Qxg5#
- 1...Be2
- 2.Sf7#
- 2.Qxg5#
- 1...Bf3
- 2.Qxg5#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Qxg5#
- 1...Rxd4!
- threat
- 1.Rxg4?
- threat
- 2.Rgxe4#
- 2.Rxg5#
- 2.Qg3#
- 1...Rb2+
- 2.Rd2#
- 1...Rxd4
- 2.Rxg5#
- 1...Rf5
- 2.Rgxe4#
- 1...Rh5
- 2.Rgxe4#
- 2.Qg3#
- 1...Rg6
- 2.Rgxe4#
- 2.Qg3#
- 1...Rg7
- 2.Rgxe4#
- 2.Qg3#
- 1...Rg8
- 2.Rgxe4#
- 2.Qg3#
- 1...Rxg4!
- threat
- 1.Rc4+?
- 1...Bxc3
- 2.Rc5#
- 1...Kd5!
- 1...Bxc3
- 1.Qf2?
- threat
- 2.Sf7#
- 2.Qg3#
- 2.Qf4#
- 2.Qf6#
- 1...Rb7
- 2.Qg3#
- 2.Qf4#
- 2.Qf6#
- 1...Rf5
- 2.Sxg4#
- 1...Rg6
- 2.Sf7#
- 2.Qg3#
- 2.Qf4#
- 1...Rg7
- 2.Qg3#
- 2.Qf4#
- 2.Qf6#
- 1...Bd1
- 2.Sf7#
- 2.Rxg5#
- 2.Qf4#
- 2.Qf6#
- 1...Be2
- 2.Sf7#
- 2.Rxg5#
- 2.Qf4#
- 2.Qf6#
- 1...Bf3
- 2.Rxg5#
- 1...Bf5
- 2.Sf7#
- 2.Qf4#
- 1...Bh5
- 2.Rxg5#
- 2.Qf4#
- 2.Qf6#
- 1...Rxd4!
- threat
- 1.Qd1?
- threat
- 2.Rd5#
- 1...Rxd4
- 2.Qxd4#
- 1...Bxd1
- 2.Rxg5#
- 1...Bxc3!
- threat
- 1.Qe1?
- threat
- 2.Qg3#
- 1...Rf5
- 2.Sxg4#
- 1...Bd1
- 2.Rxg5#
- 1...Be2
- 2.Rxg5#
- 1...Bf3
- 2.Rxg5#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Rxg5#
- 1...Rxd4!
- threat
- 1.Qf1?
- threat
- 2.Sf7#
- 2.Qf4#
- 2.Qf6#
- 1...Rb7
- 2.Qf4#
- 2.Qf6#
- 1...Rf5
- 2.Sxg4#
- 1...Rg6
- 2.Sf7#
- 2.Qf4#
- 1...Rg7
- 2.Qf4#
- 2.Qf6#
- 1...Bf3
- 2.Rxg5#
- 1...Bf5
- 2.Sf7#
- 2.Qf4#
- 1...Bh5
- 2.Rxg5#
- 2.Qf4#
- 2.Qf6#
- 1...Rxd4!
- threat
- 1.Rb2?
- Keys
- 1.Ra2!
- threat
- 2.Qg3#
- 1...Rb2+
- 2.Rd2#
- 1...Rxd4
- 2.Ra5#
- 1...Rf5
- 2.Sxg4#
- 1...Bd1
- 2.Qxg5#
- 1...Be2
- 2.Qxg5#
- 1...Bf3
- 2.Qxg5#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Qxg5#
- threat
- 1.Ra2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(g);N_GUARD,SBLOCK::S(G),XB(e)
- B(e);OGATE::R(B),XR(g)
- B(e);SBLOCK::S(G)
- Tries
- Try
- R(B);
- Threat
- QAB(A)
- Vars
- R(c);CHECK,N_GUARD,XR(B)::B(D)+R(F)
- R(g);N_GUARD,SBLOCK::S(G),XB(e)
- B(e);OGATE::QAR2(A),XR(g)
- B(e);SBLOCK::S(G)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- R(B);
- Threat
- QAB(A)
- Vars
- R(g);N_GUARD,SBLOCK::S(G),XB(e)
- B(e);OGATE::QAR2(A),XR(g)
- B(e);SBLOCK::S(G)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- B(a);XB(D)::QAB(A)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- R(B);
- Threat
- QAB(A)
- Vars
- B(e);OGATE,XR(B)::QAR2(A),XR(g)
- R(g);N_GUARD,SBLOCK::S(G),XB(e)
- B(e);OGATE::QAR2(A),XR(g)
- B(e);SBLOCK::S(G)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- R(c);::QAB(A)
- R(g);N_GUARD::S(G),XB(e)
- R(g);::QAB(A)
- B(e);OGATE::QAR2(A),XR(g)
- B(e);::S(G)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- R(B);XB(e)
- Threat
- DUALS(3)
- Vars
- R(c);CHECK,N_GUARD,S_CUTB(a)::B(D)+R(F)
- R(c);P_SPINR(c),XR(F)::R(B),XR(g)
- R(g);::R1(B),XP(d)
- Refutation
- R(g);XR(B)
- Try
- R(F);CHECK
- Vars
- B(a);XB(D)::R(F)
- Refutation
- K(f);P-FLIGHT
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(g);N_GUARD::S(G),XB(e)
- B(e);OGATE::R(B),XR(g)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- Q(A);
- Threat
- B(D)+R(F),DCHECK
- Vars
- R(c);OGATE,P_SPINR(c),XR(F)::QAB1(A),XR(c)
- B(e);OGATE,XQ(A)::R(B),XR(g)
- Refutation
- B(a);XB(D)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- R(g);N_GUARD,SBLOCK::S(G),XB(e)
- B(e);OGATE::R(B),XR(g)
- B(e);SBLOCK::S(G)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(g);N_GUARD::S(G),XB(e)
- B(e);OGATE::R(B),XR(g)
- Refutation
- R(c);P_SPINR(c),XR(F)
- Try
- Actual
- R(B);
- Threat
- QAB(A)
- Vars
- R(c);CHECK,N_GUARD,S_CUTB(a)::B(D)+R(F)
- R(c);N_GUARD,P_SPINR(c),XR(F)::R(B)
- R(g);N_GUARD,SBLOCK::S(G),XB(e)
- B(e);OGATE::QAR2(A),XR(g)
- B(e);SBLOCK::S(G)
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).