MESON Chess Problem Database
Problem Display
PID: 24915 (8/N3np1K/1p1n4/p1kpB1R1/6R1/r1pQ4/B5p1/bbN5 w - - 0 1)
Bernstein, V
Gaidorov, G
HM., Issaev MT, 1933
#2
8 + 12
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Ra4
- 2.Sb3#
- 1...Bxa2
- 2.Qd4#
- 1...Bxd3+
- 2.Sxd3#
- 1...Se4
- 2.Qb5#
- 2.Qd4#
- 1...Sdf5
- 2.Qb5#
- 1...Sef5
- 2.Qxd5#
- 1...Sg6
- 2.Qd4#
- 2.Qxd5#
- 1...c2
- 2.Qxa3#
- 1...f5
- 2.Qd4#
- 1...Rxa2
- Tries
- 1.Rc4+?
- 1...dxc4
- 2.Bxd6#
- 1...Sxc4!
- 1...dxc4
- 1.Rg6?
- threat
- 2.Bxd6#
- 2.Qd4#
- 1...Bxd3
- 2.Sxd3#
- 2.Bxd6#
- 1...Sxg6
- 2.Qd4#
- 2.Qxd5#
- 1...fxg6
- 2.Qd4#
- 1...Se4
- 2.Qb5#
- 2.Qd4#
- 1...d4
- 2.Bxd6#
- 2.Qxd4#
- 1...b5
- 2.Qd4#
- 1...g1Q
- 2.Bxd6#
- 1...g1B
- 2.Bxd6#
- 1...Ra4
- 2.Sb3#
- 2.Bxd6#
- 1...Sb5
- 2.Qxb5#
- 1...Sdf5
- 2.Qb5#
- 1...Sb7
- 2.Qb5#
- 2.Qd4#
- 1...Sdc8
- 2.Qb5#
- 2.Qd4#
- 1...Se8
- 2.Qb5#
- 2.Qd4#
- 1...Sef5
- 2.Qxd5#
- 1...Sc6
- 2.Bxd6#
- 2.Qxd5#
- 1...Sec8
- 2.Qd4#
- 2.Qxd5#
- 1...c2
- 2.Bxd6#
- 2.Qxa3#
- 1...f6
- 2.Qd4#
- 1...Sc4!
- threat
- 1.Qxb1?
- threat
- 2.Sd3#
- 2.Bd4#
- 1...Rxa2
- 2.Sb3#
- 2.Sd3#
- 1...b5
- 2.Bd4#
- 1...g1Q
- 2.Sd3#
- 1...g1B
- 2.Sd3#
- 1...Rb3
- 2.Sxb3#
- 2.Sd3#
- 1...Ra4
- 2.Sb3#
- 2.Sd3#
- 1...Bb2
- 2.Sd3#
- 1...Sc4
- 2.Sd3#
- 2.Qb5#
- 1...Se4
- 2.Sd3#
- 2.Qb5#
- 1...Sb5
- 2.Sd3#
- 2.Qxb5#
- 1...Sdf5
- 2.Sd3#
- 2.Qb5#
- 1...Sb7
- 2.Sd3#
- 2.Qb5#
- 1...Sdc8
- 2.Sd3#
- 2.Qb5#
- 1...Se8
- 2.Sd3#
- 2.Qb5#
- 1...Sef5
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...d4
- 2.Sd3#
- 2.Bxd4#
- 1...c2!
- threat
- 1.Rc4+?
- Keys
- 1.Bh2!
- threat
- 2.Bg1#
- 1...Bxd3+
- 2.Sxd3#
- 1...Rxa2
- 2.Sb3#
- 1...Sc4
- 2.Rxc4#
- 1...Se4
- 2.Qc4#
- 1...g1Q
- 2.Bxg1#
- 1...g1S
- 2.Bxg1#
- 1...g1B
- 2.Bxg1#
- 1...g1R
- 2.Bxg1#
- 1...Ra4
- 2.Sb3#
- 1...Sb5
- 2.Rc4#
- 1...Sdf5
- 2.Qb5#
- 1...Sb7
- 2.Rc4#
- 1...Sdc8
- 2.Rc4#
- 1...Se8
- 2.Rc4#
- 1...Sef5
- 2.Qxd5#
- 1...Sc6
- 2.Rxd5#
- 1...c2
- 2.Qxa3#
- 1...f5
- 2.Qd4#
- threat
- 1.Bh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 2
- Sets
- R(d);N_GUARD,XB(B)::S(A)
- R(d);N_GUARD::S(A),XR(d)
- R(d);N_GUARD::S(A)
- B(b);N_PINQ(C),XB(B)::QAB1(C)
- B(b);CHECK,XQ(C)::S(A),XB(b)
- S(j);N_PINQ(C)::QAR1(C)
- S(k);N_PINQ(C)::QAR1(C),XP(h)
- P(e);N_PINQ(C)::QAB(C),XR(d)
- P(l);N_PINQ(C)::QAB1(C)
- Tries
- Try
- R(D);CHECK
- Vars
- P(h);XR(D)::R(F)+B(E),DCHECK,XS(j)
- Refutation
- S(j);XR(D)
- Try
- R(F);N_SPINQ(C)
- Threat
- DUALS(2)
- Vars
- P(l);XR(F)::QAB1(C)
- P(i);::QAB1(C)
- P(c);::B(E),XS(j)
- S(j);N_GUARD::QAR1(C),XS(j)
- S(j);N_GUARD::QAR1(C)
- S(k);N_GUARD::QAR1(C),XP(h)
- P(l);::QAB1(C)
- Refutation
- S(j);
- Try
- Q(C);N_SPINQ(C),XB(b)
- Threat
- DUALS(2)
- Vars
- P(i);::B(E)
- P(c);::S(A)
- B(a);::S(A)
- S(k);::S(A)
- Refutation
- P(e);
- Try
- Actual
- B(E);P_PINP(h)
- Threat
- B(E)
- Vars
- B(b);CHECK,XQ(C)::S(A),XB(b)
- R(d);N_GUARD,XB(B)::S(A)
- S(j);N_GUARD::R1(D),XS(j)
- S(j);N_PINQ(C)::QAR1(C)
- P(c);::B(E),XQ(c)
- P(c);::B(E),XS(c)
- P(c);::B(E),XB(c)
- P(c);::B(E),XR(c)
- R(d);N_GUARD::S(A)
- S(j);N_GUARD::R1(D)
- S(j);N_PINQ(C),N_SPINP(h)::QAR1(C)
- S(k);N_PINQ(C),N_SPINP(h)::QAR1(C),XP(h)
- S(k);N_GUARD::R1(F),XP(h)
- P(e);N_PINQ(C)::QAB(C),XR(d)
- P(l);N_PINQ(C),N_SPINP(h)::QAB1(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).