MESON Chess Problem Database
Problem Display
PID: 48395 (K2RR3/2P5/p3B3/2N1k1bn/2b1Np2/3P4/8/q1B1Q3 w - - 0 1)
Mari, Alberto
1st Prize, Swiat Szachowy, 1928
#2
10 + 7
| 35 | L'Italia Scacchistica | 1930 |
| 273 | Mat Plus | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Bxb2#
- 1...Qc3
- 2.Qxc3#
- 1...Qb1
- 2.Qc3#
- 2.d4#
- 1...Qxc1
- 2.d4#
- 1...Qa2
- 2.Qc3#
- 2.d4#
- 1...Qa3
- 2.d4#
- 1...Qa4
- 2.Bb2#
- 2.Qc3#
- 2.d4#
- 1...Qa5
- 2.d4#
- 1...Bxd3
- 2.Sxd3#
- 2.Rd5#
- 1...Bb5
- 2.Rd5#
- 1...Bd5+
- 2.Rxd5#
- 1...Bf6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 1...Qb2
- Tries
- 1.Bxf4+?
- 1...Bxf4
- 2.Qxa1#
- 1...Sxf4
- 2.Qxa1#
- 1...Kxf4!
- 1...Bxf4
- 1.Bh3+?
- 1...Be6
- 2.Rxe6#
- 1...Be7!
- 1...Be6
- 1.Bxc4+?
- 1...Be7
- 2.Rd5#
- 1...Kf5!
- 1...Be7
- 1.Bg4+?
- 1...Be6
- 2.Rxe6#
- 1...Be7!
- 1...Be6
- 1.Rf8?
- threat
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sxg5#
- 2.Sf6#
- 2.Rf5#
- 1...Bd5+
- 2.Rxd5#
- 1...Qxc1
- 2.Rf5#
- 2.d4#
- 1...Bxd3
- 2.Rd5#
- 2.Rf5#
- 1...Bxe6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sxg5#
- 1...Be7
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sf6#
- 2.Rf5#
- 1...Qb2
- 2.Sd2#
- 2.Bxb2#
- 2.Rf5#
- 1...Qc3
- 2.Sd2#
- 2.Sxc3#
- 2.Rf5#
- 2.Qxc3#
- 1...Qd4
- 2.Rf5#
- 1...Qa2
- 2.Sd2#
- 2.Rf5#
- 2.Qc3#
- 2.d4#
- 1...Qa5
- 2.Sd2#
- 2.Sc3#
- 2.Rf5#
- 2.d4#
- 1...Bh4
- 2.Sf2#
- 2.Sg3#
- 2.Rf5#
- 1...Bf6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sxf6#
- 1...Bh6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sf6#
- 2.Rf5#
- 1...Sg3
- 2.Sxg3#
- 1...Sf6
- 2.Sxf6#
- 1...Sg7
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sxg5#
- 2.Sf6#
- 1...f3
- 2.Sxg5#
- 2.Rf5#
- 1...Bxd8!
- threat
- 1.Qg1?
- threat
- 2.Sd7#
- 2.Qxg5#
- 1...Bd5+
- 2.Rxd5#
- 1...Bxd3
- 2.Rd5#
- 2.Qxg5#
- 1...Bxe6
- 2.Qxg5#
- 1...Bxd8
- 2.Sd7#
- 1...Qd4
- 2.Qxd4#
- 2.Qxg5#
- 1...Qa4
- 2.Bb2#
- 2.Qd4#
- 2.Qxg5#
- 2.d4#
- 1...Bb5
- 2.Rd5#
- 2.Qxg5#
- 1...Bh4
- 2.Sd7#
- 1...Bf6
- 2.Sd7#
- 1...Bh6
- 2.Sd7#
- 1...Sg3
- 2.Sd7#
- 1...Sf6
- 2.Qxg5#
- 1...Sg7
- 2.Sd7#
- 1...Be7!
- threat
- 1.Bxf4+?
- Keys
- 1.Qa5!
- threat
- 2.Qxa1#
- 1...Bd5+
- 2.Rxd5#
- 1...Qxc1
- 2.d4#
- 1...Qxa5
- 2.d4#
- 1...Bxe6
- 2.Sa4#
- 1...Qb2
- 2.Bxb2#
- 1...Qc3
- 2.Qxc3#
- 1...Qd4
- 2.Sd7#
- 1...Qb1
- 2.Qc3#
- 2.d4#
- 1...Qa2
- 2.Qc3#
- 2.d4#
- 1...Qa3
- 2.d4#
- 1...Qa4
- 2.Bb2#
- 2.Qc3#
- 2.d4#
- 1...Ba2
- 2.Sb3#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(a);N_GUARD::B(A),XQ(a)
- Q(a);N_GUARD::QAB(B),XQ(a)
- Q(a);N_GUARD,XB(A)::P(C)
- Q(a);N_GUARD::P(C)
- B(b);N_GUARD::R1(I)
- B(b);CHECK,N_GUARD::R1(I),XB(b)
- Tries
- Try
- B(A);CHECK,XP(c)
- Vars
- B(e);SBLOCK,XB(A)::QAB(B),XQ(a)
- S(f);SBLOCK,XB(A)::QAB(B),XQ(a)
- Refutation
- K(d);S_FLIGHT,XB(A)
- Try
- B(F);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::R1(J),XB(b)
- Refutation
- B(e);P_SPINB(e)
- Try
- B(F);CHECK,XB(b)
- Vars
- B(e);P_SPINB(e)::R1(I)
- Refutation
- K(d);P-FLIGHT
- Try
- B(F);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::R1(J),XB(b)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(J);
- Threat
- DUALS(7)
- Vars
- B(b);CHECK,N_GUARD::R1(I),XB(b)
- Q(a);::R1(J)
- S(f);::QAR(B)+S(D),XS(f)
- Refutation
- B(e);XR(I)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,N_GUARD::R1(I),XB(b)
- B(b);P_SPINB(b),XB(F)::QAR2(B),XB(e)
- B(e);XR(I)::S(E)
- B(e);::S(E)
- S(f);::S(E)
- S(f);::QAR2(B),XB(e)
- Refutation
- B(e);
- Try
- Actual
- Q(B);
- Threat
- QAB(B),XQ(a)
- Vars
- B(b);CHECK,N_GUARD::R1(I),XB(b)
- Q(a);N_GUARD,XB(A)::P(C)
- Q(a);N_GUARD,XQ(B)::P(C)
- B(b);N_GUARD,P_SPINB(b),XB(F)::QAR(B)+S(E)
- Q(a);N_GUARD::B(A),XQ(a)
- Q(a);N_GUARD::QAB(B),XQ(a)
- Q(a);SBLOCK::QAR(B)+S(E),DCHECK
- Q(a);N_GUARD::P(C)
- B(b);N_GUARD,S_CUTQ(a)::QAR(B)+S(E)
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).