MESON Chess Problem Database
Problem Display
PID: 210435 (8/5Q2/8/2pprp2/n2pk3/1NpRrpP1/2P1Rp2/5K1B w - - 0 1)
Riczu, Lajos
Deutsche Schachblatter, 1950
#2
8 + 11
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Bxf3#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...Sb2
- 2.Sxc5#
- 1...Sb6
- 2.Sxc5#
- 1...c4
- 2.Rxd4#
- 1...f4
- 2.Qxf4#
- 1...Rxe2
- Tries
- 1.Kxf2?
- threat
- 2.Bxf3#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...Rxe2+!
- threat
- 1.Sxd4?
- threat
- 2.Bxf3#
- 2.Rexe3#
- 1...Rxe2
- 2.Bxf3#
- 1...Re6
- 2.Rexe3#
- 2.Qxe6#
- 2.Qxf5#
- 1...Re7
- 2.Rexe3#
- 2.Qxf5#
- 2.Qxe7#
- 1...Re8
- 2.Rexe3#
- 2.Qxe8#
- 2.Qxf5#
- 1...f4
- 2.Bxf3#
- 2.Qxf4#
- 1...cxd4!
- threat
- 1.Bg2?
- 1...Rxe2
- 2.Bxf3#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...Sb2
- 2.Sxc5#
- 1...Sb6
- 2.Sxc5#
- 1...c4
- 2.Rxd4#
- 1...f4
- 2.Qxf4#
- 1...fxg2+!
- 1...Rxe2
- 1.Rd1?
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...Sb2
- 2.Sxc5#
- 1...Sb6
- 2.Sxc5#
- 1...d3
- 2.cxd3#
- 1...c4
- 2.Rxd4#
- 1...f4
- 2.Qxf4#
- 1...Rxe2!
- 1...Re6
- 1.Rxc3?
- threat
- 2.Sd2#
- 1...Rxe2
- 2.Bxf3#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...d3
- 2.cxd3#
- 1...dxc3!
- threat
- 1.Qg6?
- 1...Rxe2
- 2.Bxf3#
- 1...Re6
- 2.Qxe6#
- 1...Re8
- 2.Qxe8#
- 1...Sb2
- 2.Sxc5#
- 1...Sb6
- 2.Sxc5#
- 1...c4
- 2.Rxd4#
- 1...Re7!
- 1...Rxe2
- 1.Qf6?
- 1...Rxe2
- 2.Bxf3#
- 1...Sb2
- 2.Sxc5#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Sb6
- 2.Sxc5#
- 1...c4
- 2.Rxd4#
- 1...f4
- 2.Qxf4#
- 1...Re8!
- 1...Rxe2
- 1.Qc7?
- 1...Rxe2
- 2.Bxf3#
- 1...Sb2
- 2.Sxc5#
- 1...Re6
- 2.Qf4#
- 1...Re7
- 2.Qf4#
- 2.Qxe7#
- 1...Re8
- 2.Qf4#
- 1...Sb6
- 2.Sxc5#
- 1...c4
- 2.Rxd4#
- 1...f4!
- 1...Rxe2
- 1.Qd7?
- 1...Rxe2
- 2.Bxf3#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...Sb2
- 2.Sxc5#
- 1...Sb6
- 2.Sxc5#
- 1...c4
- 2.Rxd4#
- 1...f4!
- 1...Rxe2
- 1.Qf8?
- 1...Rxe2
- 2.Bxf3#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...Sb2
- 2.Sxc5#
- 1...Sb6
- 2.Sxc5#
- 1...c4
- 2.Rxd4#
- 1...f4
- 2.Qxf4#
- 1...Re6!
- 1...Rxe2
- 1.Kxf2?
- Keys
- 1.Rdd2!
- 1...Rxe2
- 2.Rxe2#
- 1...cxd2
- 2.Sxd2#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.Qxe8#
- 1...Sb2
- 2.Sxc5#
- 1...Sb6
- 2.Sxc5#
- 1...d3
- 2.cxd3#
- 1...c4
- 2.Rxd4#
- 1...f4
- 2.Qxf4#
- 1...Rxe2
- 1.Rdd2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- S(e);N_GUARD::S(E),XP(h)
- P(h);N_GUARD::R1(F),XP(f)
- P(k);OGATE::QAR1(H),XP(k)
- Tries
- Try
- K(A);P-FLIGHT,XP(a)
- Threat
- B(B),XP(d)
- Vars
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- Refutation
- R(c);CHECK,N_SPINR(c),XR(D)
- Try
- S(E);XP(f)
- Threat
- DUALS(2)
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- Refutation
- P(h);XS(E)
- Try
- B(B);
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- S(e);N_GUARD::S(E),XP(h)
- P(h);N_GUARD::R1(F),XP(f)
- P(k);OGATE::QAR1(H),XP(k)
- Refutation
- P(d);CHECK,N_SPINP(d),XB(B)
- Try
- R(F);
- Vars
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- S(e);N_GUARD::S(E),XP(h)
- P(f);OGATE::P(C),XP(f)
- P(h);N_GUARD::R1(F),XP(f)
- P(k);OGATE::QAR1(H),XP(k)
- Refutation
- R(c);N_SPINR(c),XR(D)
- Try
- R(F);XP(b)
- Threat
- S(E)
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- P(f);OGATE::P(C),XP(f)
- Refutation
- P(f);XR(F)
- Try
- Q(H);
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- S(e);N_GUARD::S(E),XP(h)
- P(h);N_GUARD::R1(F),XP(f)
- Refutation
- R(j);
- Try
- Q(H);
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- S(e);N_GUARD::S(E),XP(h)
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- P(h);N_GUARD::R1(F),XP(f)
- P(k);OGATE::QAR1(H),XP(k)
- Refutation
- R(j);
- Try
- Q(H);
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- S(e);N_GUARD::S(E),XP(h)
- R(j);OGATE::QAR1(H)
- P(h);N_GUARD::R1(F),XP(f)
- Refutation
- P(k);
- Try
- Q(H);
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- S(e);N_GUARD::S(E),XP(h)
- P(h);N_GUARD::R1(F),XP(f)
- Refutation
- P(k);
- Try
- Q(H);
- Vars
- R(c);N_SPINR(c),XR(D)::B(B),XP(d)
- R(j);OGATEB::QAR(H),XR(j)
- S(e);N_GUARD::S(E),XP(h)
- P(h);N_GUARD::R1(F),XP(f)
- P(k);OGATE::QAR1(H),XP(k)
- Refutation
- R(j);
- Try
- Actual
- R(F);
- Vars
- R(c);N_SPINR(c),OGATE,XR(D)::R(F),XR(c)
- P(b);XR(F)::S(E),XP(b)
- R(j);OGATEB::QAR2(H),XR(j)
- R(j);OGATEB::QAR(H),XR(j)
- S(e);N_GUARD::S(E),XP(h)
- P(f);OGATE::P(C),XP(f)
- P(h);N_GUARD::R1(F),XP(f)
- P(k);OGATE::QAR1(H),XP(k)
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).