MESON Chess Problem Database
Problem Display
PID: 56367 (1BnR1n2/b1N3rP/1p2P3/1N1Pk1P1/5Rp1/Q2p2K1/6B1/q1r5 w - - 0 1)
Brogi, Giuseppe
Il Due Mosse, 1957
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Rcxc7
- 2.Qxa1#
- 1...Rgxc7
- 2.h8Q#
- 2.h8B#
- 1...Sd6
- 2.Qxd6#
- 1...Se7
- 2.Qd6#
- 1...d2
- 2.Qe3#
- 1...Rcxc7
- Tries
- 1.Sa6+?
- 1...Rcc7
- 2.Qxa1#
- 1...Rgc7
- 2.h8Q#
- 2.h8B#
- 1...Sd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Bxb8!
- 1...Rcc7
- 1.Sa8+?
- 1...Rcc7
- 2.Qxa1#
- 1...Rgc7
- 2.h8Q#
- 2.h8B#
- 1...Sd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Bxb8!
- 1...Rcc7
- 1.Se8+?
- 1...Rcc7
- 2.Qxa1#
- 1...Rgc7
- 2.h8Q#
- 2.h8B#
- 1...Sd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Bxb8!
- 1...Rcc7
- 1.Rdxf8?
- threat
- 2.Re4#
- 2.R4f5#
- 2.R8f5#
- 1...Rcxc7
- 2.R4f5#
- 2.R8f5#
- 2.Qxa1#
- 1...Rxg5
- 2.Re4#
- 1...Rgxc7
- 2.R4f5#
- 2.R8f5#
- 2.h8Q#
- 2.h8B#
- 1...Qd4
- 2.R4f5#
- 2.R8f5#
- 1...Re1
- 2.R4f5#
- 2.R8f5#
- 1...Rf1
- 2.Re4#
- 2.R8f5#
- 1...Rc4
- 2.R4f5#
- 2.R8f5#
- 1...Sd6
- 2.Qxd6#
- 1...Se7
- 2.Re4#
- 2.Qd6#
- 1...Rf7!
- threat
- 1.Qxf8?
- threat
- 2.Re4#
- 2.Rf5#
- 2.Qxg7#
- 2.Qf5#
- 2.Qf6#
- 1...Rxg5
- 2.Re4#
- 2.Qf6#
- 1...Rgxc7
- 2.Re4#
- 2.Rf5#
- 2.Qg7#
- 2.Qf5#
- 2.Qf6#
- 2.Qh8#
- 2.h8Q#
- 2.h8B#
- 1...Rxh7
- 2.Re4#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Qd4
- 2.Rf5#
- 2.Qxg7#
- 2.Qf5#
- 2.Qf6#
- 1...Qa4
- 2.Rf5#
- 2.Qxg7#
- 2.Qf5#
- 2.Qf6#
- 1...Re1
- 2.Rf5#
- 2.Qxg7#
- 2.Qf5#
- 2.Qf6#
- 1...Rf1
- 2.Re4#
- 2.Qxg7#
- 2.Qf5#
- 2.Qf6#
- 1...Rc4
- 2.Rf5#
- 2.Qxg7#
- 2.Qf5#
- 2.Qf6#
- 1...Rg6
- 2.Re4#
- 2.Rf5#
- 2.Qf5#
- 1...Rd7
- 2.Re4#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Re7
- 2.Re4#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Rg8
- 2.Re4#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Sd6
- 2.Qxd6#
- 2.Qxg7#
- 2.Qf6#
- 1...Se7
- 2.Re4#
- 2.Qxg7#
- 2.Qf6#
- 1...Rf7!
- threat
- 1.Qxa1+?
- 1...Rc3
- 2.Qxc3#
- 2.Qe1#
- 1...Rxa1!
- 1...Rc3
- 1.Qxd3?
- threat
- 2.Rf5#
- 2.Qe2#
- 2.Qe4#
- 2.Qf5#
- 2.Qe3#
- 1...Rxg5
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Qd4
- 2.Rf5#
- 2.Qf5#
- 2.Qxd4#
- 1...Qb2
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.Qe3#
- 1...Qc3
- 2.Rf5#
- 1...Qb1
- 2.Rf5#
- 2.Qd4#
- 1...Qa2
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.Qe3#
- 2.Qd4#
- 1...Qa3
- 2.Rf5#
- 1...Qa4
- 2.Rf5#
- 2.Qf5#
- 1...Re1
- 2.Rf5#
- 2.Qf5#
- 1...Rf1
- 2.Qe2#
- 2.Qe4#
- 2.Qf5#
- 2.Qe3#
- 1...Rc2
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.Qe3#
- 1...Rc3
- 2.Rf5#
- 1...Rc4
- 2.Rf5#
- 2.Qf5#
- 1...Rf7
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Se7
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Sd6!
- threat
- 1.Sa6+?
- Keys
- 1.Sd6!
- threat
- 2.Re4#
- 1...Rcxc7
- 2.Sc4#
- 1...Rxg5
- 2.Sf7#
- 1...Rgxc7
- 2.Sf7#
- 1...Sxd6
- 2.Qxd6#
- 1...Qd4
- 2.Rf5#
- 1...Re1
- 2.Sc4#
- 1...Rc4
- 2.Sxc4#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- R(b);N_GUARD,P_SPINR(b),XS(I)::QAB(B),XQ(a)
- R(h);P_SPINR(h),XS(I)::P=Q
- S(i);N_GUARD::QAB1(B),XS(i)
- S(i);N_GUARD::QAB1(B)
- P(c);OGATE::QAR2(B)
- Tries
- Try
- S(I);CHECK
- Vars
- R(b);P_SPINR(b)::QAB(B),XQ(a)
- R(h);P_SPINR(h),S_CUTB(g),S_CUTR(b),S_CUTS(i)::P=Q
- Refutation
- B(g);XB(K)
- Try
- S(I);CHECK
- Vars
- R(b);P_SPINR(b)::QAB(B),XQ(a)
- R(h);P_SPINR(h),S_CUTB(g),S_CUTR(b),S_CUTS(i)::P=Q
- Refutation
- B(g);XB(K)
- Try
- S(I);CHECK
- Vars
- R(b);P_SPINR(b)::QAB(B),XQ(a)
- R(h);P_SPINR(h),S_CUTB(g),S_CUTR(b),S_CUTS(i)::P=Q
- Refutation
- B(g);XB(K)
- Try
- R(L);XS(j)
- Threat
- DUALS(3)
- Vars
- R(h);XP(G)::R1(D)
- S(i);N_GUARD::QAB1(B),XS(i)
- Refutation
- R(h);
- Try
- Q(B);XS(j)
- Threat
- DUALS(5)
- Refutation
- R(h);
- Try
- Q(B);CHECK,XQ(a)
- Refutation
- R(b);XQ(B)
- Try
- Q(B);XP(c)
- Threat
- DUALS(5)
- Vars
- Q(a);P_PINQ(B)::R1(D)
- R(b);P_PINQ(B)::R1(D)
- Refutation
- S(i);
- Try
- Actual
- S(E);
- Threat
- R1(D)
- Vars
- R(b);N_GUARD,XS(I)::S(E)
- R(h);N_GUARD,XP(G)::S(E)
- R(h);N_GUARD,XS(I)::S(E)
- S(i);OGATE,XS(E)::QAB1(B),XS(i)
- Q(a);SBLOCK::R1(D)
- R(b);N_GUARD::S(E)
- R(b);N_GUARD::S(E),XR(b)
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).