MESON Chess Problem Database
Problem Display
PID: 214512 (R7/1n6/2b2BK1/pN3R1P/4k2r/1B1pp2r/8/1n1Q2bN w - - 0 1)
Rhaun, WH
Brownson's Chess Journal, 1877
#2
9 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxh1
- 2.Qf3#
- 1...Rh2
- 2.Sg3#
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Rg3+
- 2.Sxg3#
- 1...Rf4
- 2.Re5#
- 1...Rg4+
- 2.Qxg4#
- 1...Rxh5
- 2.Qg4#
- 1...Bxb5
- 2.Bd5#
- 1...Bd5
- 2.Bxd5#
- 1...Bd7
- 2.Bd5#
- 1...Be8+
- 2.Rxe8#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...d2
- 2.Bc2#
- 2.Qc2#
- 2.Qxb1#
- 1...a4
- 2.Rxa4#
- 1...Rxh1
- Tries
- 1.Ba2?
- threat
- 2.Qa4#
- 1...Rg3+
- 2.Sxg3#
- 1...Rg4+
- 2.Qxg4#
- 1...Be8+
- 2.Rxe8#
- 1...Bxb5
- 2.Bd5#
- 1...d2
- 2.Bxb1#
- 2.Qc2#
- 2.Qxb1#
- 1...Rf4
- 2.Re5#
- 1...Bd5
- 2.Bxd5#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...a4
- 2.Rxa4#
- 2.Qxa4#
- 1...e2!
- threat
- 1.Bc4?
- threat
- 2.Bxd3#
- 2.Qxd3#
- 1...Rg3+
- 2.Sxg3#
- 1...Rg4+
- 2.Qxg4#
- 1...Be8+
- 2.Rxe8#
- 1...Bxb5
- 2.Bd5#
- 2.Qxd3#
- 1...Rf4
- 2.Bxd3#
- 2.Re5#
- 1...Sd2
- 2.Sc3#
- 1...Sc5
- 2.Sd6#
- 1...d2
- 2.Qc2#
- 2.Qxb1#
- 1...e2!
- threat
- 1.Bf7?
- threat
- 2.Qa4#
- 1...Rg3+
- 2.Sxg3#
- 1...Rg4+
- 2.Qxg4#
- 1...Bxb5
- 2.Bd5#
- 1...d2
- 2.Qc2#
- 2.Qxb1#
- 1...Rf4
- 2.Re5#
- 1...Bd5
- 2.Bxd5#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...a4
- 2.Rxa4#
- 2.Qxa4#
- 1...e2!
- threat
- 1.Bg8?
- threat
- 2.Qa4#
- 1...Rg3+
- 2.Sxg3#
- 1...Rg4+
- 2.Qxg4#
- 1...Be8+
- 2.Rxe8#
- 1...Bxb5
- 2.Bd5#
- 1...d2
- 2.Qc2#
- 2.Qxb1#
- 1...Rf4
- 2.Re5#
- 1...Bd5
- 2.Bxd5#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...a4
- 2.Rxa4#
- 2.Qxa4#
- 1...e2!
- threat
- 1.Rd8?
- threat
- 2.Rd4#
- 2.Qxd3#
- 1...Rg3+
- 2.Sxg3#
- 1...Rg4+
- 2.Qxg4#
- 1...Be8+
- 2.Rxe8#
- 1...Bxb5
- 2.Bd5#
- 2.Rd4#
- 1...Sxd8
- 2.Sd6#
- 1...Rf4
- 2.Re5#
- 2.Rd4#
- 1...Bd5
- 2.Bxd5#
- 1...Bd7
- 2.Bd5#
- 1...Sd2
- 2.Sc3#
- 2.Rd4#
- 1...Sc5
- 2.Sd6#
- 2.Rd4#
- 1...Sd6
- 2.Sxd6#
- 1...d2
- 2.Bc2#
- 2.Rd4#
- 2.Qc2#
- 2.Qxb1#
- 1...e2!
- threat
- 1.Ba2?
- Keys
- 1.Qe2!
- 1...Rg3+
- 2.Sxg3#
- 1...Rg4+
- 2.Qxg4#
- 1...Be8+
- 2.Rxe8#
- 1...Rxh1
- 2.Qf3#
- 2.Qg2#
- 1...Rxh5
- 2.Qg4#
- 1...Bxb5
- 2.Bd5#
- 1...dxe2
- 2.Bc2#
- 1...Bf2
- 2.Sxf2#
- 1...Rh2
- 2.Sg3#
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Rf4
- 2.Re5#
- 1...Bh2
- 2.Sf2#
- 1...Bd5
- 2.Bxd5#
- 1...Bd7
- 2.Bd5#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...d2
- 2.Bc2#
- 2.Qc4#
- 1...a4
- 2.Rxa4#
- 1...Rg3+
- 1.Qe2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(e);N_GUARD,XS(B)::QAB1(A)
- R(e);N_GUARD::QAB1(A),XR(e)
- R(e);CHECK,N_GUARD::S(B),XR(e)
- R(g);SBLOCK::R1(E)
- R(g);CHECK,N_GUARD::QAR2(A),XR(g)
- R(g);N_GUARD,XP(F)::QAR2(A)
- B(i);N_GUARD,XS(D)::B(C)
- B(i);N_GUARD::B(C),XB(i)
- B(i);N_GUARD::B(C)
- B(i);CHECK,N_GUARD::R(I),XB(i)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(j);N_GUARD::S(D)
- S(j);N_GUARD::S(D),XS(j)
- P(h);OGATE::R(I),XP(h)
- Tries
- Try
- B(C);
- Threat
- QAR(A)
- Vars
- R(e);CHECK,N_GUARD::S(B),XR(e)
- R(g);CHECK,N_GUARD::QAR2(A),XR(g)
- B(i);CHECK,N_GUARD::R(I),XB(i)
- B(i);N_GUARD,XS(D)::B(C)
- R(g);SBLOCK::R1(E)
- B(i);N_GUARD::B(C),XB(i)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(j);N_GUARD::S(D)
- S(j);N_GUARD::S(D),XS(j)
- Refutation
- P(d);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::S(B),XR(e)
- R(g);CHECK,N_GUARD::QAR2(A),XR(g)
- B(i);CHECK,N_GUARD::R(I),XB(i)
- S(a);N_GUARD::S(D)
- S(j);N_GUARD::S(D)
- Refutation
- P(d);
- Try
- B(C);
- Threat
- QAR(A)
- Vars
- R(e);CHECK,N_GUARD::S(B),XR(e)
- R(g);CHECK,N_GUARD::QAR2(A),XR(g)
- B(i);N_GUARD,XS(D)::B(C)
- R(g);SBLOCK::R1(E)
- B(i);N_GUARD::B(C),XB(i)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(j);N_GUARD::S(D)
- S(j);N_GUARD::S(D),XS(j)
- Refutation
- P(d);
- Try
- B(C);
- Threat
- QAR(A)
- Vars
- R(e);CHECK,N_GUARD::S(B),XR(e)
- R(g);CHECK,N_GUARD::QAR2(A),XR(g)
- B(i);CHECK,N_GUARD::R(I),XB(i)
- B(i);N_GUARD,XS(D)::B(C)
- R(g);SBLOCK::R1(E)
- B(i);N_GUARD::B(C),XB(i)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(j);N_GUARD::S(D)
- S(j);N_GUARD::S(D),XS(j)
- Refutation
- P(d);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::S(B),XR(e)
- R(g);CHECK,N_GUARD::QAR2(A),XR(g)
- B(i);CHECK,N_GUARD::R(I),XB(i)
- S(j);N_GUARD,XR(I)::S(D)
- B(i);N_GUARD::B(C),XB(i)
- B(i);N_GUARD::B(C)
- S(j);N_GUARD::S(D),XS(j)
- Refutation
- P(d);
- Try
- Actual
- Q(A);P_PINP(d)
- Vars
- R(e);CHECK,N_GUARD::S(B),XR(e)
- R(g);CHECK,N_GUARD::QAR2(A),XR(g)
- B(i);CHECK,N_GUARD::R(I),XB(i)
- R(g);N_GUARD,XP(F)::QAR2(A)
- B(i);N_GUARD,XS(D)::B(C)
- P(c);N_SPINP(d),OGATEB,XQ(A)::B(C)
- B(b);N_GUARD::S(B),XB(b)
- R(e);N_GUARD::QAB1(A),XR(e)
- R(g);SBLOCK::R1(E)
- B(b);N_GUARD::S(B)
- B(i);N_GUARD::B(C),XB(i)
- B(i);N_GUARD::B(C)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(j);N_GUARD::S(D)
- S(j);N_GUARD::S(D),XS(j)
- P(h);OGATE::R(I),XP(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).