MESON Chess Problem Database
Problem Display
PID: 266447 (6b1/1Kp5/2RN1Q2/3kppp1/1p4q1/2P1p2r/7b/1B6 w - - 0 1)
Ellerman, Arnoldo
Probleemblad, 1950
#2
6 + 11
SOLUTION
- SOUND
- Sets
- 1...Bf7
- 2.Qxf7#
- 1...Bh7
- 2.Qf7#
- 1...e4
- 2.c4#
- 1...f4
- 2.Be4#
- 1...cxd6
- 2.Qxd6#
- 1...Bf7
- Tries
- 1.Se4?
- threat
- 2.Rc5#
- 2.Qd8#
- 1...Qxe4
- 2.Qd8#
- 1...bxc3
- 2.Qd8#
- 1...Rh6
- 2.Rc5#
- 1...Rh7
- 2.Rc5#
- 1...Be6
- 2.Rc5#
- 2.Qxe6#
- 1...f4
- 2.Rc5#
- 1...fxe4!
- threat
- 1.Sb5?
- threat
- 2.Sxc7#
- 2.Qd8#
- 1...bxc3
- 2.Qd8#
- 1...Rh6
- 2.Sxc7#
- 1...Be6
- 2.Sxc7#
- 2.Qxe6#
- 1...e4
- 2.Qd4#
- 2.c4#
- 1...f4
- 2.Sxc7#
- 2.c4#
- 1...Rh7!
- threat
- 1.Sxf5?
- threat
- 2.Se7#
- 2.Qd8#
- 1...bxc3
- 2.Qd8#
- 1...Rh6
- 2.Sxe3#
- 2.Se7#
- 1...Rh7
- 2.Sxe3#
- 1...Be6
- 2.Se7#
- 2.Qxe6#
- 1...e4
- 2.Se7#
- 2.Qd4#
- 2.c4#
- 1...Qxf5!
- threat
- 1.Sf7?
- threat
- 2.Qd8#
- 2.Qe6#
- 1...Bxf7
- 2.Qd8#
- 2.Qxf7#
- 1...bxc3
- 2.Qd8#
- 1...e4
- 2.Qd4#
- 2.Qe6#
- 2.c4#
- 1...f4
- 2.Qxe5#
- 1...Rh6!
- threat
- 1.Sc8?
- threat
- 2.Se7#
- 2.Qd8#
- 1...bxc3
- 2.Qd8#
- 1...Rh6
- 2.Se7#
- 1...Be6
- 2.Se7#
- 2.Qxe6#
- 1...e4
- 2.Se7#
- 2.Qd4#
- 2.c4#
- 1...f4
- 2.Se7#
- 1...Rh7!
- threat
- 1.Se8?
- threat
- 2.Sxc7#
- 2.Qd8#
- 1...bxc3
- 2.Qd8#
- 1...Rh6
- 2.Sxc7#
- 1...Be6
- 2.Sxc7#
- 2.Qxe6#
- 1...e4
- 2.Qd4#
- 2.c4#
- 1...f4
- 2.Sxc7#
- 1...Rh7!
- threat
- 1.Ba2+?
- 1...Qc4
- 2.Bxc4#
- 1...b3!
- 1...Qc4
- 1.c4+?
- 1...Kd4
- 2.Sb5#
- 1...Qxc4!
- 1...Kd4
- 1.Se4?
- Keys
- 1.Sc4!
- threat
- 2.Qd8#
- 1...Rh6
- 2.Sxe3#
- 1...Rh7
- 2.Sxe3#
- 1...Be6
- 2.Qxe6#
- 1...e4
- 2.Qd4#
- 1...f4
- 2.Qxe5#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- B(k);N_GUARD::QAB(E),XB(k)
- B(k);N_GUARD::QAB(E)
- P(g);S_CUTQ(e)::P(B)
- P(h);N_GUARD,S_CUTQ(e)::B(A)
- P(j);OGATE,XS(D)::QAR1(E),XP(j)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(D)::QAR(E)
- P(d);XP(B)::QAR(E)
- R(c);::R1(C)
- P(h);::R1(C)
- Refutation
- P(h);XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(d);XP(B)::QAR(E)
- R(c);::S(D),XP(j)
- Refutation
- R(c);
- Try
- S(D);XP(h)
- Threat
- DUALS(2)
- Vars
- P(d);XP(B)::QAR(E)
- R(c);N_GUARD::S(D),XP(b)
- Refutation
- Q(e);XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(d);XP(B)::QAR(E)
- P(h);S_CUTB(a)::QAR1(E),XP(g)
- Refutation
- R(c);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(d);XP(B)::QAR(E)
- R(c);::S(D)
- P(h);::S(D)
- Refutation
- R(c);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(d);XP(B)::QAR(E)
- R(c);::S(D),XP(j)
- P(h);::S(D),XP(j)
- Refutation
- R(c);
- Try
- B(A);CHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e)::B(A),XQ(e)
- Refutation
- P(d);P_SPINP(d)
- Try
- P(B);CHECK
- Vars
- K(f);P-FLIGHT,P_SPINP(g),S_CUTQ(e)::S(D)
- Refutation
- Q(e);XP(B)
- Try
- Actual
- S(D);
- Threat
- QAR(E)
- Vars
- R(c);N_GUARD::S(D),XP(b)
- B(k);N_GUARD::QAB1(E),XB(k)
- P(g);OGATE::QAR1(E)
- P(h);S_CUTB(a)::QAR1(E),XP(g)
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).