MESON Chess Problem Database
Problem Display
PID: 135494 (5K2/3NP1p1/3P2R1/1PPk4/R3rp2/3p1rpN/2PQb1B1/b5B1 w - - 0 1)
Ancin, Andrej
4th Prize, Xadrez Brasileiro, 1935
#2
13 + 9
| 14649 | Andrej Ancin - Chess Compositions | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Bxe4#
- 2.c4#
- 1...Rf2
- 2.Bxe4#
- 1...Rfe3
- 2.Sxf4#
- 1...Ree3
- 2.Sxf4#
- 1...Re5
- 2.Sxf4#
- 2.Sb6#
- 1...Re6
- 2.Sxf4#
- 1...Rxe7
- 2.Sxf4#
- 1...Bd4
- 2.c4#
- 1...Be5
- 2.Sb6#
- 1...Rf1
- Tries
- 1.Bxf3?
- threat
- 2.Sxf4#
- 2.Bxe4#
- 2.c4#
- 1...Bf6
- 2.Sxf4#
- 1...Bc3
- 2.Sxf4#
- 2.Bxe4#
- 1...Bd4
- 2.Sxf4#
- 2.Rxd4#
- 2.c4#
- 1...Be5
- 2.Sb6#
- 2.Bxe4#
- 2.c4#
- 1...Bxf3!
- threat
- 1.Rg5+?
- 1...Ke6
- 2.e8Q#
- 1...Re5
- 2.Sxf4#
- 1...Be5!
- 1...Ke6
- 1.Qe3?
- threat
- 2.Qxe4#
- 1...Rfxe3
- 2.Sxf4#
- 1...Rexe3
- 2.Sxf4#
- 1...Rxa4
- 2.Sb6#
- 2.Qe6#
- 1...Rxe7
- 2.Sxf4#
- 2.Sb6#
- 2.c4#
- 1...Rb4
- 2.Sb6#
- 2.Qe6#
- 1...Rc4
- 2.Sb6#
- 2.Qe6#
- 1...Rd4
- 2.Rg5#
- 2.Qe5#
- 2.Qe6#
- 1...Re5
- 2.Sxf4#
- 2.Sb6#
- 2.c4#
- 1...Re6
- 2.Sxf4#
- 2.Sb6#
- 2.Qxe6#
- 2.c4#
- 1...Bd4
- 2.c4#
- 1...fxe3+!
- threat
- 1.Qxe2?
- threat
- 2.Qxe4#
- 1...Rxe2
- 2.Sxf4#
- 1...Rxa4
- 2.Sb6#
- 2.Qe6#
- 1...Rxe7
- 2.Sxf4#
- 2.Sb6#
- 2.c4#
- 1...Rb4
- 2.Sb6#
- 2.Qe6#
- 1...Rfe3
- 2.Sxf4#
- 1...Ree3
- 2.Sxf4#
- 1...Rc4
- 2.Sb6#
- 2.Qe6#
- 1...Rd4
- 2.Rg5#
- 2.Qe5#
- 2.Qe6#
- 1...Re5
- 2.Sxf4#
- 2.Sb6#
- 2.c4#
- 1...Re6
- 2.Sxf4#
- 2.Sb6#
- 2.Qxe6#
- 2.c4#
- 1...Bd4
- 2.c4#
- 1...dxe2!
- threat
- 1.Qxd3+?
- 1...Rxd3
- 2.Sxf4#
- 2.Bxe4#
- 2.c4#
- 1...Rd4
- 2.Sxf4#
- 2.Qf5#
- 2.c4#
- 1...Bd4
- 2.c4#
- 1...Bxd3!
- 1...Rxd3
- 1.e8Q?
- threat
- 2.Sb6#
- 2.Qxe4#
- 2.Qa8#
- 1...Rxa4
- 2.Sb6#
- 2.Qe6#
- 1...Rb4
- 2.Sb6#
- 2.Qe6#
- 1...Rf2
- 2.Bxe4#
- 2.Qf7#
- 2.Qxe4#
- 2.Qe6#
- 2.Qa8#
- 1...Rfe3
- 2.Sxf4#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Ree3
- 2.Sxf4#
- 2.Qa8#
- 1...Rc4
- 2.Sb6#
- 2.Qe6#
- 2.Qa8#
- 1...Rd4
- 2.Rg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qa8#
- 1...Re5
- 2.Sxf4#
- 2.Sb6#
- 2.Qa8#
- 1...Re6
- 2.Sxf4#
- 2.Qxe6#
- 2.Qa8#
- 1...Re7
- 2.Sxf4#
- 2.Qa8#
- 1...Bd4
- 2.Qa8#
- 2.c4#
- 1...Be5
- 2.Sb6#
- 2.Qf7#
- 2.Qe6#
- 2.Qa8#
- 1...Bf6
- 2.Sb6#
- 2.Qxe4#
- 1...Rxe8+!
- threat
- 1.e8R?
- threat
- 2.Sb6#
- 1...Rf2
- 2.Bxe4#
- 1...Rfe3
- 2.Sxf4#
- 1...Ree3
- 2.Sxf4#
- 1...Rd4
- 2.Rg5#
- 2.Re5#
- 1...Re6
- 2.Sxf4#
- 1...Re7
- 2.Sxf4#
- 1...Bd4
- 2.c4#
- 1...Rxe8+!
- threat
- 1.Bxf3?
- Keys
- 1.Qxf4!
- threat
- 2.Sb6#
- 1...Rfxf4+
- 2.Sxf4#
- 1...Rexf4+
- 2.Sxf4#
- 1...Bf6
- 2.Qxe4#
- 1...Rf2
- 2.Bxe4#
- 1...Rfe3
- 2.Qf7#
- 1...Ree3
- 2.c4#
- 1...Rd4
- 2.Qf5#
- 1...Bd4
- 2.c4#
- threat
- 1.Qxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(d);OGATE,P_SPINR(f)::B(D),XR(f)
- R(d);N_GUARD,P_SPINR(f)::S(E),XP(g)
- R(f);N_GUARD,P_SPINR(d)::S(E),XP(g)
- R(f);N_GUARD,P_SPINR(d),XP(L)::S(E),XP(g)
- B(a);N_SPINP(c),S_CUTR(f)::P(B)
- B(a);SBLOCK::S(K)
- Tries
- Try
- B(D);P_PINR(f),XR(d)
- Threat
- DUALS(3)
- Vars
- B(a);::S(E),XP(g)
- Refutation
- B(b);N_SPINR(f),XB(D)
- Try
- R(J);CHECK
- Vars
- K(h);N_SPINP(c),S_FLIGHT::P=Q
- R(f);P_SPINR(d)::S(E),XP(g)
- Refutation
- B(a);P_SPINB(a)
- Try
- Q(C);N_PINP(c)
- Threat
- QAB1(C),XR(f)
- Vars
- R(d);N_GUARD,P_SPINR(f),XQ(C)::S(E),XP(g)
- R(f);N_GUARD,P_SPINR(d),XQ(C)::S(E),XP(g)
- B(a);S_CUTR(f)::P(B)
- Refutation
- P(g);CHECK,XQ(C)
- Try
- Q(C);N_PINP(c),XB(b)
- Threat
- QAB1(C),XR(f)
- Vars
- R(f);N_GUARD,P_SPINR(d),XQ(C)::S(E),XP(g)
- R(d);N_GUARD,P_SPINR(f)::S(E),XP(g)
- R(f);N_GUARD,P_SPINR(d)::S(E),XP(g)
- B(a);S_CUTR(f)::P(B)
- Refutation
- P(c);XQ(C)
- Try
- Q(C);CHECK,XP(c)
- Vars
- B(a);P_SPINB(a)::P(B)
- Refutation
- B(b);XQ(C)
- Try
- P(L);
- Threat
- DUALS(3)
- Refutation
- R(f);CHECK,P_SPINR(d),XQ(L)
- Try
- P(L);
- Threat
- S(K)
- Vars
- R(d);OGATE,P_SPINR(f)::B(D),XR(f)
- R(d);N_GUARD,P_SPINR(f)::S(E),XP(g)
- R(f);N_GUARD,P_SPINR(d)::S(E),XP(g)
- B(a);N_SPINP(c),S_CUTR(f)::P(B)
- Refutation
- R(f);CHECK,P_SPINR(d),XR(L)
- Try
- Actual
- Q(C);N_PINP(c),P_SPINQ(C),XP(g)
- Threat
- S(K)
- Vars
- R(d);CHECK,P_SPINR(f),XQ(C)::S(E),XR(d)
- R(f);CHECK,P_SPINR(d),XQ(C)::S(E),XR(f)
- B(a);N_PINQ(C)::QAB1(C),XR(f)
- R(d);OGATE,P_SPINR(f)::B(D),XR(f)
- R(d);N_GUARD,N_PINQ(C),P_SPINR(f)::QAB(C)
- R(f);N_GUARD,P_SPINR(d)::P(B)
- R(f);N_GUARD,P_SPINR(d),S_CUTB(a)::QAR2(C)
- B(a);S_CUTR(f)::P(B)
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).