MESON Chess Problem Database
Problem Display
PID: 228986 (7Q/3Rp3/1P2P2b/1K1Pn2r/R1Nk2N1/2p1n3/2P5/5qBB w - - 0 1)
Mari, Alberto
L'Italia Scacchistica, 1926
#2
12 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 1...Qh3
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Qxc4+
- 2.Rxc4#
- 1...Qa1
- 2.Sa3#
- 1...Qb1+
- 2.Sb2#
- 1...Qc1
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Qd1
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Qe1
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Qxg1
- 2.Scxe3#
- 1...Qf2
- 2.Scxe3#
- 1...Qf3
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 1...Qf4
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Qf5
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Qf6
- 2.Scxe5#
- 1...Qf7
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Qf8
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Scxe3#
- 2.Sa5#
- 2.Scxe5#
- 2.Sd6#
- 1...Rxh1
- 2.Qxe5#
- 1...Rh2
- 2.Qxe5#
- 1...Rh3
- 2.Qxe5#
- 1...Rh4
- 2.Qxe5#
- 1...Rg5
- 2.Bxe3#
- 1...Bg5
- 2.Qxe5#
- 1...Bg7
- 2.Bxe3#
- 1...Bf8
- 2.Bxe3#
- 1...Qg2
- Tries
- 1.Sxe5?
- threat
- 2.Sc6#
- 1...Qxc4+
- 2.Rxc4#
- 1...Qb1+
- 2.Sb2#
- 1...Rxe5
- 2.Qxe5#
- 1...Qg2
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sa5#
- 1...Qf3
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sa5#
- 1...Rxh1!
- threat
- 1.Sxe5?
- Keys
- 1.d6!
- threat
- 2.dxe7#
- 1...Qxc4+
- 2.Rxc4#
- 1...Qb1+
- 2.Sb2#
- 1...Qxg1
- 2.Scxe3#
- 1...Rxh1
- 2.Qxe5#
- 1...exd6
- 2.Rxd6#
- 1...Qg2
- 2.Scxe3#
- 1...Qf3
- 2.Scxe3#
- 1...Qf2
- 2.Scxe3#
- 1...Qf6
- 2.Scxe5#
- 1...Bg7
- 2.Bxe3#
- threat
- 1.d6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::R1(D),XQ(a)
- Q(a);N_PINS(E)::R(D)+S(E)
- Q(a);CHECK,N_PINS(E)::R(D)+S(E)
- Q(a);N_PINS(E),N_SPINS(c),P_SPINS(e),XB(A)::R(D)+S(E),XS(c)
- Q(a);N_PINS(E),N_SPINS(c),P_SPINS(e)::R(D)+S(E),XS(c)
- Q(a);N_PINS(E)::R(D)+S(E),XS(e)
- R(f);N_GUARD,XB(B)::QAB1(L),XS(e)
- R(f);N_GUARD::QAB1(L),XS(e)
- R(f);S_CUTB(g)::B(A),XS(c)
- B(g);S_CUTR(f)::QAB1(L),XS(e)
- B(g);N_GUARD::B(A),XS(c)
- Tries
- Try
- S(F);XS(e)
- Threat
- QAB(L)+S(F),DCHECK
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::R1(D),XQ(a)
- Q(a);CHECK,N_PINS(E)::R(D)+S(E)
- R(f);OGATE,P_PINP(H),P_SPINR(f),XS(F)::QAB1(L),XR(f)
- Refutation
- R(f);XB(B)
- Try
- Actual
- P(H);
- Threat
- R(K)+P(H),XP(h)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::R1(D),XQ(a)
- Q(a);CHECK,N_PINS(E)::R(D)+S(E)
- Q(a);N_PINS(E),N_SPINS(c),P_SPINS(e),XB(A)::R(D)+S(E),XS(c)
- R(f);N_GUARD,XB(B)::QAB1(L),XS(e)
- P(h);OGATE,P_SPINP(h),XP(H)::R(K),XP(h)
- Q(a);N_PINS(E)::R(D)+S(E),XS(c)
- Q(a);N_PINS(E),N_SPINS(c),P_SPINS(e)::R(D)+S(E),XS(c)
- Q(a);N_PINS(E)::R(D)+S(E),XS(e)
- B(g);N_GUARD::B(A),XS(c)
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).