MESON Chess Problem Database
Problem Display
PID: 196802 (1n2r3/K4n2/1p3R2/N3k1P1/2P4p/Q7/3N2P1/b3r1B1 w - - 0 1)
St Maurice, Charles-Ephrem
Montreal Press, 1919
#2
9 + 8
| 5454 | Near Snap | 2019 |
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Rxg1
- 2.Qe3#
- 1...Re2
- 2.Qxa1#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Sf3#
- 1...Re7+
- 2.Qxe7#
- 1...Rc8
- 2.Qe7#
- 1...Rd8
- 2.Qe7#
- 1...Rf8
- 2.Qe7#
- 1...Rg8
- 2.Qe7#
- 1...Rh8
- 2.Qe7#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bh2#
- 1...Sxg5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Sd8
- 2.Qd6#
- 1...Sh8
- 2.Qd6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6+
- 2.Sxc6#
- 1...Sd7
- 2.Sc6#
- 1...h3
- 2.Qg3#
- 1...bxa5
- 2.Qc5#
- 2.Qxa5#
- 1...b5
- 2.Qc5#
- 1...Rb1
- Tries
- 1.Bxb6?
- threat
- 2.Qc5#
- 1...Re7+
- 2.Qxe7#
- 1...Sc6+
- 2.Sxc6#
- 1...Sxg5
- 2.Qd6#
- 1...Rc8
- 2.Qe7#
- 1...Rd8
- 2.Qe7#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 1...Bd4!
- threat
- 1.Qd3?
- threat
- 2.Sf3#
- 2.Bh2#
- 2.Qf5#
- 2.Qd5#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.Sf3#
- 2.Qe4#
- 2.Qe3#
- 2.Qd5#
- 1...Sxg5
- 2.Qf5#
- 2.Qd6#
- 1...Re6
- 2.Sf3#
- 2.Bh2#
- 2.Rf5#
- 2.Qd5#
- 1...Rf1
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 2.Qd5#
- 1...Re3
- 2.Qxe3#
- 2.Qd5#
- 1...Re4
- 2.Sf3#
- 2.Qxe4#
- 2.Qd5#
- 1...Rd8
- 2.Sf3#
- 2.Bh2#
- 2.Qf5#
- 1...Bd4
- 2.Sf3#
- 2.Bh2#
- 2.Bxd4#
- 2.Qf5#
- 2.Qxd4#
- 1...Sd6
- 2.Sf3#
- 2.Bh2#
- 2.Qd5#
- 2.Qxd6#
- 1...Sh6
- 2.Sf3#
- 2.Bh2#
- 2.Qd5#
- 2.Qd6#
- 1...Re7+!
- threat
- 1.Qf3?
- threat
- 2.Qd5#
- 2.Qf4#
- 2.Qf5#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.Qe4#
- 2.Qd5#
- 2.Qe3#
- 2.Qf4#
- 1...Sxg5
- 2.Qf4#
- 2.Qf5#
- 1...Re3
- 2.Qd5#
- 2.Qxe3#
- 2.Qf4#
- 1...Re6
- 2.Qd5#
- 2.Qf4#
- 1...Rf1
- 2.Qe2#
- 2.Qe4#
- 2.Qd5#
- 2.Qe3#
- 1...Re4
- 2.Qxe4#
- 2.Qf5#
- 1...Rd8
- 2.Qf4#
- 2.Qf5#
- 1...Sd6
- 2.Qd5#
- 2.Qf4#
- 1...Sh6
- 2.Qd5#
- 2.Qf4#
- 1...Re7+!
- threat
- 1.Qh3?
- threat
- 2.Qf5#
- 2.Qh2#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.Qe3#
- 1...Sxg5
- 2.Qf5#
- 1...Re3
- 2.Qxe3#
- 1...Re6
- 2.Qxe6#
- 2.Qh2#
- 1...Rf1
- 2.Qe3#
- 1...Re4
- 2.Sf3#
- 2.Qf5#
- 1...Sd6
- 2.Qh2#
- 1...Sh6
- 2.Qh2#
- 1...Re7+!
- threat
- 1.Bxb6?
- Keys
- 1.g4!
- 1...Re7+
- 2.Qxe7#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.Qe3#
- 1...Sxg5
- 2.Qd6#
- 1...bxa5
- 2.Qc5#
- 2.Qxa5#
- 1...hxg4 ep
- 2.Qxg3#
- 1...Re3
- 2.Qxe3#
- 1...Re6
- 2.Rf5#
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Re2
- 2.Qxa1#
- 1...Re4
- 2.Sf3#
- 1...Rc8
- 2.Qe7#
- 1...Rd8
- 2.Qe7#
- 1...Rf8
- 2.Qe7#
- 1...Rg8
- 2.Qe7#
- 1...Rh8
- 2.Qe7#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bh2#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Sd8
- 2.Qd6#
- 1...Sh8
- 2.Qd6#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 1...h3
- 2.Qg3#
- 1...b5
- 2.Qc5#
- 1...Re7+
- 1.g4!
Anticipated by 48641(0000)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::QAR2(D)
- R(b);N_GUARD,XB(A)::QAR2(D)
- R(b);N_GUARD::QAB(D),XB(a)
- R(b);N_GUARD::QAR2(D),XR(b)
- R(b);SBLOCK::S(B)
- R(h);CHECK,N_GUARD::QAR2(D),XR(h)
- R(h);N_GUARD::QAR2(D)
- B(a);N_GUARD::QAB(D),XB(a)
- B(a);SBLOCK::B(A)
- S(f);N_GUARD,XP(G)::QAB1(D)
- S(f);N_GUARD::QAB1(D),XS(f)
- S(f);N_GUARD::QAB1(D)
- S(g);N_GUARD::S(F)
- S(g);CHECK,N_GUARD::S(F),XS(g)
- P(c);N_GUARD::QAB(D)
- P(e);N_GUARD::QAR2(D)
- Tries
- Try
- B(A);XP(e)
- Threat
- QAR2(D)
- Vars
- R(h);CHECK,N_GUARD::QAR2(D),XR(h)
- S(g);CHECK,N_GUARD::S(F),XS(g)
- S(f);N_GUARD,XP(G)::QAB1(D)
- R(h);N_GUARD::QAR2(D)
- S(g);N_GUARD::S(F)
- Refutation
- B(a);P_PINB(A)
- Try
- Q(D);
- Threat
- DUALS(4)
- Vars
- S(g);CHECK,N_GUARD::S(F),XS(g)
- Refutation
- R(h);CHECK
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- S(g);CHECK,N_GUARD::S(F),XS(g)
- Refutation
- R(h);CHECK
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::S(F),XS(g)
- R(b);N_GUARD,XB(A)::QAR2(D)
- S(f);XP(G)::QAR1(D)
- R(b);N_GUARD::QAR2(D),XR(b)
- R(b);N_GUARD::QAR2(D)
- S(f);::QAB(D)
- Refutation
- R(h);CHECK
- Try
- Actual
- P(C);
- Vars
- R(h);CHECK,N_GUARD::QAR2(D),XR(h)
- S(g);CHECK,N_GUARD::S(F),XS(g)
- R(b);N_GUARD,XB(A)::QAR2(D)
- S(f);N_GUARD,XP(G)::QAB1(D)
- P(c);EP,N_GUARD,XP(C)::QAB(D),XP(c)
- R(b);N_GUARD::QAR2(D),XR(b)
- R(h);SBLOCK::R1(H)
- R(b);N_GUARD::QAR2(D)
- R(b);N_GUARD::QAB(D),XB(a)
- R(b);SBLOCK::S(B)
- R(h);N_GUARD::QAR2(D)
- B(a);N_GUARD::QAB(D),XB(a)
- B(a);SBLOCK::B(A)
- S(f);N_GUARD::QAB1(D),XS(f)
- S(f);N_GUARD::QAB1(D)
- S(g);N_GUARD::S(F)
- P(c);N_GUARD::QAB(D)
- P(e);N_GUARD::QAR2(D)
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).