MESON Chess Problem Database
Problem Display
PID: 114831 (2N5/p1pQNp2/P2b1B2/2p2P2/1pk5/2r2n2/1K2P2p/2RR3B w - - 0 1)
Andrade, Barry Jack da Costa
Manchester Guardian, 1957
#2
11 + 10
| 236 | The Field | 1957 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxc1
- 2.Rxc1#
- 1...Rc2+
- 2.Rxc2#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Bxe7
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Rxc1
- Tries
- 1.Ka2?
- 1...Rc2+
- 2.Rxc2#
- 1...Rxc1
- 2.Rxc1#
- 1...Bxe7
- 2.Qd3#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...b3+!
- 1...Rc2+
- 1.Sd5?
- threat
- 2.Se3#
- 1...Rc2+
- 2.Rxc2#
- 1...c6
- 2.Sxd6#
- 1...b3
- 2.Rxc3#
- 2.Qa4#
- 1...Bf4!
- threat
- 1.Sxa7?
- threat
- 2.Qb5#
- 1...Rc2+
- 2.Rxc2#
- 1...Sd4
- 2.Bd5#
- 1...c6!
- threat
- 1.Bxc3?
- threat
- 2.Be1#
- 2.Bd4#
- 2.Be5#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...c6
- 2.Sxd6#
- 1...Bf4
- 2.Bd2#
- 2.Qd3#
- 1...Be5
- 2.Bd4#
- 2.Bxe5#
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 2.Bxe1#
- 1...Sd2
- 2.Bd5#
- 2.Be5#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sd4
- 2.Bd5#
- 2.Bxd4#
- 1...Se5
- 2.Bd5#
- 2.Be1#
- 2.Bd4#
- 2.Bxe5#
- 1...b3
- 2.Be1#
- 2.Ba5#
- 2.Qa4#
- 1...f6
- 2.Be1#
- 2.Bd4#
- 2.Be5#
- 2.Bxf6#
- 1...bxc3+!
- threat
- 1.Be5?
- 1...Rc2+
- 2.Rxc2#
- 1...Rxc1
- 2.Rxc1#
- 1...Bxe5
- 2.Qd3#
- 1...Bxe7
- 2.Qd3#
- 1...Sxe5
- 2.Bd5#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...f6!
- 1...Rc2+
- 1.Bg7?
- 1...Rc2+
- 2.Rxc2#
- 1...Rxc1
- 2.Rxc1#
- 1...Bxe7
- 2.Qd3#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...f6!
- 1...Rc2+
- 1.Bh8?
- 1...Rc2+
- 2.Rxc2#
- 1...Rxc1
- 2.Rxc1#
- 1...Bxe7
- 2.Qd3#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...f6!
- 1...Rc2+
- 1.Rc2?
- 1...Bxe7
- 2.Qd3#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...Rxc2+!
- 1...Bxe7
- 1.Re1?
- 1...Rc2+
- 2.Rxc2#
- 1...Rxc1
- 2.Rxc1#
- 1...Bxe7
- 2.Qd3#
- 1...Sxe1
- 2.Bd5#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...Se5!
- 1...Rc2+
- 1.Rd2?
- 1...Rc2+
- 2.Rcxc2#
- 2.Rdxc2#
- 1...Bxe7
- 2.Qd3#
- 1...Sxd2
- 2.Bd5#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...Rxc1!
- 1...Rc2+
- 1.Rd4+?
- 1...Sxd4
- 2.Bd5#
- 1...cxd4!
- 1...Sxd4
- 1.Qa4?
- threat
- 2.Rxc3#
- 1...Rc2+
- 2.Rxc2#
- 1...Rxc1
- 2.Rxc1#
- 1...Be5!
- threat
- 1.exf3?
- 1...Rc2+
- 2.Rxc2#
- 1...Bxe7
- 2.Qd3#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Rxc1!
- 1...Rc2+
- 1.Ka2?
- Keys
- 1.Rf1!
- 1...Rc2+
- 2.Rxc2#
- 1...Rxc1
- 2.Rxc1#
- 1...Bxe7
- 2.Qd3#
- 1...Se5
- 2.Rf4#
- 1...b3
- 2.Qa4#
- 1...c6
- 2.Sxd6#
- 1...Bg3
- 2.Qd3#
- 1...Bf4
- 2.Qd3#
- 1...Be5
- 2.Qd3#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...Rc2+
- 1.Rf1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- R(b);CHECK,OGATEB::R(A),XR(b)
- B(g);OGATE::QAB1(I)
- B(g);OGATE,XS(J)::QAB1(I)
- S(c);OGATE::B(C)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- B(g);OGATE,XS(J)::QAB1(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- S(c);OGATE::B(C)
- Refutation
- P(d);CHECK
- Try
- S(J);
- Threat
- S(J)
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- P(i);N_GUARD::S(K),XB(g)
- Refutation
- B(g);
- Try
- S(K);XP(h)
- Threat
- QAB1(I)
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- S(c);OGATE::B(C)
- Refutation
- P(i);
- Try
- B(H);XR(b)
- Threat
- DUALS(6)
- Vars
- P(i);N_GUARD::S(K),XB(g)
- Refutation
- P(d);CHECK,P_SPINP(d),XB(H)
- Try
- B(H);
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- B(g);OGATE,XB(H)::QAB1(I)
- B(g);OGATE,XS(J)::QAB1(I)
- S(c);OGATE,XB(H)::B(C)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- S(c);OGATE::B(C)
- Refutation
- P(j);
- Try
- B(H);
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- B(g);OGATE,XS(J)::QAB1(I)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- S(c);OGATE::B(C)
- Refutation
- P(j);
- Try
- B(H);
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- B(g);OGATE,XS(J)::QAB1(I)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- S(c);OGATE::B(C)
- Refutation
- P(j);
- Try
- R(A);
- Vars
- B(g);OGATE,XS(J)::QAB1(I)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- S(c);OGATE::B(C)
- Refutation
- R(b);CHECK,N_SPINR(b),XR(A)
- Try
- R(B);
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- B(g);OGATE,XS(J)::QAB1(I)
- S(c);OGATE,XR(B)::B(C)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- S(c);OGATE::B(C)
- Refutation
- S(c);
- Try
- R(B);
- Vars
- B(g);OGATE,XS(J)::QAB1(I)
- S(c);OGATE,XR(B)::B(C)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- S(c);OGATE::B(C)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- R(B);CHECK
- Vars
- S(c);OGATE,XR(B)::B(C)
- Refutation
- P(f);XR(B)
- Try
- Q(I);P_PINP(d)
- Threat
- R1(A),XR(b)
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- Refutation
- B(g);
- Try
- P(E);XS(c)
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- B(g);OGATE,XS(J)::QAB1(I)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- Refutation
- R(b);N_SPINR(b),XR(A)
- Try
- Actual
- R(B);
- Vars
- R(b);CHECK,OGATEB::R(A),XR(b)
- R(b);N_SPINR(b),OGATE,XR(A)::R(B),XR(b)
- B(g);OGATE,XS(J)::QAB1(I)
- S(c);OGATE::R(B)
- P(d);OGATEB::QAR2(I)
- P(i);N_GUARD::S(K),XB(g)
- B(g);OGATE::QAB1(I)
- S(c);OGATE::B(C)
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).