MESON Chess Problem Database
Problem Display
PID: 83691 (n1R5/1b1p4/2q5/BNk1p3/P1B4R/2n2Q2/2rp1PK1/b7 w - - 0 1)
Ellerman, Arnoldo
Roura, Juan R
Good Companions, 1920
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sxa4
- 2.Qd5#
- 1...Sxb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...d5
- 2.Qf8#
- 1...Sb1
- Tries
- 1.Bb3?
- threat
- 2.Rc4#
- 1...Sxa4
- 2.Qd5#
- 1...Sxb5
- 2.Qd5#
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sb6
- 2.Bb4#
- 1...e4
- 2.Qe3#
- 1...d5
- 2.Qf8#
- 1...Se4!
- threat
- 1.Be6?
- threat
- 2.Rc4#
- 1...Sxa4
- 2.Qd5#
- 1...Sxb5
- 2.Qd5#
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Se4
- 2.Qa3#
- 1...Sd5
- 2.Qxd5#
- 1...Sb6
- 2.Bb4#
- 1...e4
- 2.Qe3#
- 1...d5
- 2.Qf8#
- 1...dxe6!
- threat
- 1.Bf7?
- threat
- 2.Rc4#
- 1...Sxa4
- 2.Qd5#
- 1...Sxb5
- 2.Qd5#
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Se4
- 2.Qa3#
- 1...Sd5
- 2.Qxd5#
- 1...Sb6
- 2.Bb4#
- 1...e4
- 2.Qe3#
- 1...d5!
- threat
- 1.Rxc6+?
- 1...dxc6
- 2.Qe3#
- 2.Qf8#
- 1...Bxc6!
- 1...dxc6
- 1.Bb3?
- Keys
- 1.Bg8!
- threat
- 2.Rc4#
- 1...Sxa4
- 2.Qd5#
- 1...Sxb5
- 2.Qd5#
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Se4
- 2.Qa3#
- 1...Sd5
- 2.Qxd5#
- 1...Sb6
- 2.Bb4#
- 1...e4
- 2.Qe3#
- 1...d5
- 2.Qf8#
- threat
- 1.Bg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD,XP(D)::QAR1(C)
- S(d);N_GUARD,XS(H)::QAR1(C)
- S(d);N_GUARD,N_PINQ(C)::QAR1(C),XS(d)
- P(i);N_PINQ(C)::QAB(C)
- Tries
- Try
- B(E);
- Threat
- R1(F)
- Vars
- S(d);N_GUARD,XP(D)::QAR1(C)
- S(d);N_GUARD,XS(H)::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD,N_PINQ(C)::QAR1(C),XS(d)
- S(j);SBLOCK::B(G)
- P(f);N_PINQ(C)::QAB(C)
- P(i);N_PINQ(C)::QAB(C)
- Refutation
- S(d);N_PINQ(C)
- Try
- B(E);
- Threat
- R1(F)
- Vars
- S(d);N_GUARD,XP(D)::QAR1(C)
- S(d);N_GUARD,XS(H)::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_PINQ(C)::QAB(C)
- S(d);N_GUARD,N_PINQ(C)::QAR1(C),XS(d)
- S(j);SBLOCK::B(G)
- P(f);N_PINQ(C)::QAB(C)
- P(i);N_PINQ(C)::QAB(C)
- Refutation
- P(i);XB(E)
- Try
- B(E);
- Threat
- R1(F)
- Vars
- S(d);N_GUARD,XP(D)::QAR1(C)
- S(d);N_GUARD,XS(H)::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_PINQ(C)::QAB(C)
- S(d);N_GUARD,N_PINQ(C)::QAR1(C),XS(d)
- S(j);SBLOCK::B(G)
- P(f);N_PINQ(C)::QAB(C)
- Refutation
- P(i);N_PINQ(C)
- Try
- R(I);CHECK,N_SPINQ(C),XQ(g)
- Refutation
- B(h);P_PINQ(C),XR(I)
- Try
- Actual
- B(E);
- Threat
- R1(F)
- Vars
- S(d);N_GUARD,XP(D)::QAR1(C)
- S(d);N_GUARD,XS(H)::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_PINQ(C)::QAB(C)
- S(d);N_GUARD,N_PINQ(C)::QAR1(C),XS(d)
- S(j);SBLOCK::B(G)
- P(f);N_PINQ(C)::QAB(C)
- P(i);N_PINQ(C)::QAB(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).