MESON Chess Problem Database
Problem Display
PID: 104900 (3R3B/1p2Q1Np/n4pbp/N2P3P/3k1P2/1Bnr1p1K/5P2/2R5 w - - 0 1)
St Maurice, Ephrem
Montreal Daily Witness, 1900
#2
12 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Se6#
- 1...Bf5+
- 2.Sxf5#
- 1...Bxh5
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb1
- 2.Rc4#
- 1...Sd1
- 2.Rc4#
- 1...Sa2
- 2.Rc4#
- 1...Se2
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Se4
- 2.Se6#
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 2.Se8#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Rd1
- Tries
- 1.Kh2?
- 1...Bxh5
- 2.Sf5#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Se6#
- 1...Bf5
- 2.Sxf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb1
- 2.Rc4#
- 1...Sd1
- 2.Rc4#
- 1...Sa2
- 2.Rc4#
- 1...Se2
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Se4
- 2.Se6#
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 2.Se8#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Sc5!
- 1...Bxh5
- 1.Kh4?
- 1...Bxh5
- 2.Sf5#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Se6#
- 1...Bf5
- 2.Sxf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb1
- 2.Rc4#
- 1...Sd1
- 2.Rc4#
- 1...Sa2
- 2.Rc4#
- 1...Se2
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Se4
- 2.Se6#
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 2.Se8#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Sc5!
- 1...Bxh5
- 1.Sxb7?
- 1...Bf5+
- 2.Sxf5#
- 1...Bxh5
- 2.Sf5#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Se6#
- 2.Qxf6#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb1
- 2.Rc4#
- 1...Sd1
- 2.Rc4#
- 1...Sa2
- 2.Rc4#
- 1...Se2
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Se4
- 2.Se6#
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 2.Se8#
- 2.Qe5#
- 1...Sc5!
- 1...Bf5+
- 1.Se8?
- threat
- 2.Bxf6#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Se4
- 2.Rc4#
- 1...Bf5+!
- threat
- 1.Ba2?
- 1...Bf5+
- 2.Sxf5#
- 1...Bxh5
- 2.Sf5#
- 1...Sxa2
- 2.Rc4#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Se6#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb1
- 2.Rc4#
- 1...Sd1
- 2.Rc4#
- 1...Se2
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Se4
- 2.Se6#
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 2.Se8#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Sc5!
- 1...Bf5+
- 1.Rc2?
- 1...Bf5+
- 2.Sxf5#
- 1...Bxh5
- 2.Sf5#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Se6#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb1
- 2.Rc4#
- 1...Sd1
- 2.Rc4#
- 1...Sa2
- 2.Rc4#
- 1...Se2
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Se4
- 2.Se6#
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 2.Se8#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Sc5!
- 1...Bf5+
- 1.Rd7?
- 1...Bf5+
- 2.Sxf5#
- 1...Bxh5
- 2.Sf5#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Se6#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb1
- 2.Rc4#
- 1...Sd1
- 2.Rc4#
- 1...Sa2
- 2.Rc4#
- 1...Se2
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Se4
- 2.Se6#
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 2.Se8#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Sc5!
- 1...Bf5+
- 1.Qxf6+?
- 1...Ke4
- 2.Qe5#
- 1...Kc5!
- 1...Ke4
- 1.hxg6?
- threat
- 2.Sf5#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...f5
- 2.Sxf5#
- 2.Sh5#
- 2.Se8#
- 1...hxg6!
- threat
- 1.Kh2?
- Keys
- 1.Re8!
- 1...Bf5+
- 2.Sxf5#
- 1...Bxh5
- 2.Sf5#
- 1...Bxe8
- 2.Sf5#
- 1...Sxd5
- 2.Rc4#
- 1...Rd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Sc5
- 2.Qxf6#
- 1...Be4
- 2.Se6#
- 1...Bf7
- 2.Sf5#
- 1...Sb1
- 2.Qxf6#
- 1...Sd1
- 2.Qxf6#
- 1...Sa2
- 2.Qxf6#
- 1...Se2
- 2.Qxf6#
- 1...Sa4
- 2.Qxf6#
- 1...Se4
- 2.Se6#
- 1...Sb5
- 2.Qxf6#
- 1...Sb4
- 2.Qxb4#
- 1...Sc7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...f5
- 2.Sxf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Bf5+
- 1.Re8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- B(g);SBLOCK::S(J)
- B(g);CHECK,N_GUARD::S(J),XB(g)
- B(g);N_GUARD,XP(H)::S(J)
- B(g);N_GUARD::S(J)
- S(a);OGATE::R1(A)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- P(i);N_GUARD::S(F)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- B(g);N_GUARD,XP(H)::S(J)
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD,P_PINP(B)::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- B(g);SBLOCK::S(J)
- B(g);N_GUARD::S(J),XB(g)
- B(g);N_GUARD::S(J)
- S(a);OGATE::R1(A)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- P(i);N_GUARD::S(F)
- Refutation
- S(e);
- Try
- K(D);P-FLIGHT
- Vars
- B(g);N_GUARD,XP(H)::S(J)
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- B(g);SBLOCK::S(J)
- B(g);N_GUARD::S(J),XB(g)
- B(g);N_GUARD::S(J)
- S(a);OGATE::R1(A)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- P(i);N_GUARD::S(F)
- Refutation
- S(e);
- Try
- S(F);XP(i)
- Vars
- B(g);CHECK,N_GUARD::S(J),XB(g)
- B(g);N_GUARD,XP(H)::S(J)
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- B(g);N_GUARD::S(J)
- S(a);OGATE::R1(A)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- Refutation
- S(e);
- Try
- S(J);P_PINP(f)
- Threat
- B(L),XP(f)
- Vars
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- S(a);OGATE::R1(A)
- Refutation
- B(g);CHECK
- Try
- B(C);
- Vars
- B(g);CHECK,N_GUARD::S(J),XB(g)
- B(g);N_GUARD,XP(H)::S(J)
- S(a);OGATE,XB(C)::R1(A)
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- B(g);SBLOCK::S(J)
- B(g);N_GUARD::S(J)
- S(a);OGATE::R1(A)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- P(i);N_GUARD::S(F)
- Refutation
- S(e);
- Try
- R(A);
- Vars
- B(g);CHECK,N_GUARD::S(J),XB(g)
- B(g);N_GUARD,XP(H)::S(J)
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- B(g);SBLOCK::S(J)
- B(g);N_GUARD::S(J)
- S(a);OGATE::R1(A)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- P(i);N_GUARD::S(F)
- Refutation
- S(e);
- Try
- R(K);
- Vars
- B(g);CHECK,N_GUARD::S(J),XB(g)
- B(g);N_GUARD,XP(H)::S(J)
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- B(g);SBLOCK::S(J)
- B(g);N_GUARD::S(J)
- S(a);OGATE::R1(A)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- P(i);N_GUARD::S(F)
- Refutation
- S(e);
- Try
- Q(I);CHECK,XP(f)
- Vars
- K(d);P-FLIGHT::QAR1(I)
- Refutation
- K(d);P_SPINS(a),S_FLIGHT
- Try
- P(H);XB(g)
- Threat
- S(J)
- Vars
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- Refutation
- P(j);XP(H)
- Try
- Actual
- R(K);
- Vars
- B(g);CHECK,N_GUARD::S(J),XB(g)
- B(g);N_GUARD,XP(H)::S(J)
- B(g);N_GUARD,XR(K)::S(J)
- S(a);OGATE,SBLOCK,XP(G)::R1(A)
- R(b);N_GUARD::QAB1(I)
- R(b);N_GUARD::QAB1(I),XR(b)
- S(e);SBLOCK::QAB(I),XP(f)
- B(g);SBLOCK::S(J)
- B(g);N_GUARD::S(J)
- S(a);::QAB(I),XP(f)
- S(a);SBLOCK::S(J)
- S(e);N_GUARD::QAR2(I),XS(e)
- S(e);N_GUARD::QAR2(I)
- P(f);::B(L)+S(J),DCHECK,XP(f)
- P(i);N_GUARD::S(F)
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).