MESON Chess Problem Database
Problem Display
PID: 239055 (2K4b/B2p4/2p5/6R1/R1Qq1p2/1N3k2/3p2r1/5B1N w - - 0 1)
Segers, Marcel
L'Italia Scacchistica, 1933
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ke3
- 2.Qd3#
- 1...Ke4
- 2.Qd3#
- 1...Qa1
- 2.Bxg2#
- 2.Qd3#
- 2.Qe4#
- 2.Qxf4#
- 1...Qg1
- 2.Qe4#
- 2.Qxf4#
- 1...Qb2
- 2.Bxg2#
- 2.Qd3#
- 2.Qe4#
- 2.Qxf4#
- 1...Qf2
- 2.Qe4#
- 2.Qxf4#
- 1...Qc3
- 2.Bxg2#
- 2.Qe4#
- 2.Qxf4#
- 1...Qe3
- 2.Bxg2#
- 1...Qc5
- 2.Qe4#
- 2.Qxf4#
- 1...Qe5
- 2.Bxg2#
- 1...Qb6
- 2.Qe4#
- 2.Qxf4#
- 1...Qf6
- 2.Bxg2#
- 2.Qd3#
- 2.Qe4#
- 1...Qxa7
- 2.Qe4#
- 2.Qxf4#
- 1...Qg7
- 2.Bxg2#
- 2.Qd3#
- 2.Qe4#
- 2.Qxf4#
- 1...Qd3
- 2.Qxd3#
- 2.Qxf4#
- 1...Qe4
- 2.Bxg2#
- 2.Qxe4#
- 1...Qd5
- 2.Bxg2#
- 2.Qxf4#
- 1...Qd6
- 2.Bxg2#
- 2.Qe4#
- 1...Rg1
- 2.Qe2#
- 1...Re2
- 2.Qxe2#
- 1...Rg3
- 2.Qe2#
- 1...Rg4
- 2.Qe2#
- 1...Rxg5
- 2.Qe2#
- 1...Ke3
- Tries
- 1.Sxd2+?
- 1...Ke3
- 2.Qd3#
- 2.Qc3#
- 1...Qxd2
- 2.Qe4#
- 1...Rxd2!
- 1...Ke3
- 1.Sxd4+?
- 1...Ke3
- 2.Qd3#
- 1...Ke4
- 2.Qd3#
- 1...Bxd4!
- 1...Ke3
- 1.Be2+?
- 1...Ke3
- 2.Qd3#
- 1...Ke4
- 2.Qd3#
- 1...Rxe2!
- 1...Ke3
- 1.Bxd4?
- threat
- 2.Bxg2#
- 2.Qd3#
- 1...Ke4
- 2.Qd3#
- 1...Rxg5
- 2.Qe2#
- 1...d1Q
- 2.Bxg2#
- 1...d1S
- 2.Bxg2#
- 1...d1R
- 2.Bxg2#
- 1...Rg1
- 2.Sxd2#
- 2.Qe2#
- 2.Qd3#
- 1...Re2
- 2.Qxe2#
- 1...Rf2
- 2.Qd3#
- 1...Rh2
- 2.Qd3#
- 1...Rg3
- 2.Sxd2#
- 2.Qe2#
- 2.Qd3#
- 1...Rg4
- 2.Sxd2#
- 2.Qe2#
- 2.Qd3#
- 1...Bxd4!
- threat
- 1.Qd3+?
- 1...Qe3
- 2.Bxg2#
- 1...Qxd3!
- 1...Qe3
- 1.Qxd4?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qxf4#
- 1...Rxg5
- 2.Qxf4#
- 1...d1Q
- 2.Qe4#
- 2.Qxf4#
- 1...d1S
- 2.Qe4#
- 2.Qxf4#
- 1...d1R
- 2.Qe4#
- 2.Qxf4#
- 1...Re2
- 2.Qxf4#
- 1...Rg4
- 2.Sxd2#
- 2.Qf2#
- 2.Qd3#
- 2.Qe4#
- 1...Be5
- 2.Qd3#
- 2.Qe4#
- 1...d5
- 2.Qd3#
- 2.Qxf4#
- 1...Bxd4!
- threat
- 1.Sxd2+?
- Keys
- 1.Ra3!
- threat
- 2.Sxd2#
- 1...Ke3
- 2.Qd3#
- 1...Ke4
- 2.Sc5#
- 1...Rxg5
- 2.Qe2#
- 1...d1Q
- 2.Sd2#
- 1...d1S
- 2.Sd2#
- 1...d1B
- 2.Sd2#
- 1...d1R
- 2.Sd2#
- 1...Qc3
- 2.Bxg2#
- 1...Qe3
- 2.Bxg2#
- 1...Qd3
- 2.Qxd3#
- threat
- 1.Ra3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 5
- Sets
- K(c);P-FLIGHT,P_SPINQ(d)::QAR1(E)
- K(c);P_SPINQ(d),S_FLIGHT::QAB1(E)
- Q(d);::B(A),XR(b)
- R(b);N_GUARD::QAB1(E)
- R(b);N_GUARD::QAB1(E),XR(b)
- R(b);N_GUARD,XR(F)::QAB1(E)
- Tries
- Try
- S(C);CHECK,XP(a)
- Vars
- Q(d);OGATE,XS(C)::QAB1(E)
- Refutation
- R(b);XS(C)
- Try
- S(C);CHECK,XQ(d)
- Vars
- K(c);P-FLIGHT::QAR1(E)
- K(c);S_FLIGHT::QAB1(E)
- Refutation
- B(h);XS(C)
- Try
- B(A);CHECK
- Vars
- K(c);P-FLIGHT,P_SPINQ(d)::QAR1(E)
- K(c);P_SPINQ(d),S_FLIGHT::QAB1(E)
- Refutation
- R(b);XB(A)
- Try
- B(G);XQ(d)
- Threat
- DUALS(2)
- Vars
- K(c);S_FLIGHT::QAB1(E)
- R(b);N_GUARD,XR(F)::QAB1(E)
- P(a);::B(A),XR(b)
- R(b);N_GUARD::QAB1(E),XR(b)
- R(b);::QAR2(E)
- Refutation
- B(h);XB(G)
- Try
- Q(E);CHECK
- Vars
- Q(d);P_SPINQ(d)::B(A),XR(b)
- Refutation
- Q(d);XQ(E)
- Try
- Q(E);XQ(d)
- Threat
- DUALS(3)
- Vars
- R(b);XR(F)::QAR1(E),XP(e)
- R(b);::QAR1(E),XP(e)
- Refutation
- B(h);XQ(E)
- Try
- Actual
- R(D);
- Threat
- R(D)+S(C),DCHECK,XP(a)
- Vars
- K(c);P-FLIGHT,P_SPINQ(d)::QAR1(E)
- K(c);P_SPINQ(d),S_FLIGHT::S(C)
- R(b);N_GUARD,XR(F)::QAB1(E)
- P(a);::R(D)+S(C),DCHECK
- Q(d);::B(A),XR(b)
- Q(d);N_GUARD::QAR2(E),XQ(d)
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).