MESON Chess Problem Database
Problem Display
PID: 194991 (2R2B2/6pK/4N3/rn1kPQ2/qr3p2/1P1bbP2/1n1RN3/8 w - - 0 1)
Guarini, Carlo
1/2 Prize, L'Italia Scacchistica, 1918
#2
10 + 10
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Rc5#
- 1...Bxd2
- 2.Rc5#
- 1...Bd4
- 2.S2xf4#
- 2.S6xf4#
- 1...Bc5
- 2.Rxc5#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 2.exd6#
- 1...Sa7
- 2.Sc3#
- 1...Rd4
- Tries
- 1.S2xf4+?
- 1...Bxf4
- 2.Rc5#
- 1...Rxf4!
- 1...Bxf4
- 1.S6xf4+?
- 1...Bxf4
- 2.Rc5#
- 1...Rxf4!
- 1...Bxf4
- 1.Sg5?
- threat
- 2.e6#
- 1...Bxd2
- 2.Rc5#
- 1...Rd4
- 2.Rc5#
- 1...Re4
- 2.Qe6#
- 1...Bd4
- 2.Sxf4#
- 1...Sc4
- 2.Qe4#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.exd6#
- 1...g6
- 2.Qe6#
- 1...Sc7!
- threat
- 1.Sxg7?
- threat
- 2.e6#
- 1...Bxd2
- 2.Rc5#
- 1...Rd4
- 2.Rc5#
- 1...Re4
- 2.Qe6#
- 1...Bd4
- 2.Sxf4#
- 1...Sc4
- 2.Qe4#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.exd6#
- 1...Sc7!
- threat
- 1.Rxd3+?
- 1...Rd4
- 2.Rc5#
- 1...Bd4
- 2.S2xf4#
- 2.S6xf4#
- 2.Rc5#
- 1...Sd4
- 2.Sc3#
- 1...Sxd3!
- 1...Rd4
- 1.Rd8+?
- 1...Sd6
- 2.Rxd6#
- 1...Kc6!
- 1...Sd6
- 1.S2xf4+?
- Keys
- 1.Sd8!
- threat
- 2.e6#
- 1...Bxd2
- 2.Rc5#
- 1...Rd4
- 2.Rc5#
- 1...Re4
- 2.Qe6#
- 1...Bd4
- 2.Sxf4#
- 1...Sc4
- 2.Qe4#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.exd6#
- 1...g6
- 2.Qe6#
- threat
- 1.Sd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- R(e);N_SPINB(b),S_CUTB(c)::R1(I)
- B(c);N_GUARD,N_SPINB(b),XR(A)::R1(I)
- B(c);N_GUARD::R1(I),XB(c)
- S(h);N_GUARD::S(B)
- S(h);N_GUARD::S(B),XS(h)
- S(h);N_GUARD,N_SPINB(b)::S(B)
- Tries
- Try
- S(B);CHECK,XP(f)
- Vars
- B(c);XS(B)::R1(I)
- Refutation
- R(e);XS(B)
- Try
- S(G);CHECK,XP(f)
- Vars
- B(c);XS(G)::R1(I)
- Refutation
- R(e);XS(G)
- Try
- S(G);
- Threat
- QAR(F)+P(E)
- Vars
- B(c);N_GUARD,N_SPINB(b),XR(A)::R1(I)
- R(e);N_SPINB(b),S_CUTB(c)::R1(I)
- R(e);N_PINQ(F)::QAB1(F)
- B(c);N_GUARD,N_SPINB(b),SBLOCK,S_CUTR(e)::S(B),XP(f)
- S(a);S_CUTR(e)::QAB1(F)
- S(h);N_GUARD,N_SPINB(b),SBLOCK::S(B)
- S(h);OGATE::QAR(F)+P(E),XS(h)
- P(j);N_PINQ(F)::QAB1(F)
- Refutation
- S(h);
- Try
- S(G);XP(j)
- Threat
- QAR(F)+P(E)
- Vars
- B(c);N_GUARD,N_SPINB(b),XR(A)::R1(I)
- R(e);N_SPINB(b),S_CUTB(c)::R1(I)
- R(e);N_PINQ(F)::QAB1(F)
- B(c);N_GUARD,N_SPINB(b),SBLOCK,S_CUTR(e)::S(B),XP(f)
- S(a);S_CUTR(e)::QAB1(F)
- S(h);N_GUARD,N_SPINB(b),SBLOCK::S(B)
- S(h);OGATE::QAR(F)+P(E),XS(h)
- Refutation
- S(h);
- Try
- R(A);CHECK,N_SPINQ(F),XB(b)
- Vars
- R(e);P_SPINR(e)::R1(I)
- S(h);P_SPINS(h)::S(B)
- Refutation
- S(a);XR(A)
- Try
- R(I);CHECK
- Vars
- S(h);N_GUARD,P_SPINS(h)::R1(I),XS(h)
- Refutation
- K(i);N_SPINB(b),S_FLIGHT
- Try
- Actual
- S(G);
- Threat
- QAR(F)+P(E)
- Vars
- B(c);N_GUARD,N_SPINB(b),XR(A)::R1(I)
- R(e);N_SPINB(b),S_CUTB(c)::R1(I)
- R(e);N_PINQ(F)::QAB1(F)
- B(c);N_GUARD,N_SPINB(b),SBLOCK,S_CUTR(e)::S(B),XP(f)
- S(a);S_CUTR(e)::QAB1(F)
- S(h);N_GUARD,N_SPINB(b),SBLOCK::S(B)
- S(h);OGATE::QAR(F)+P(E),XS(h)
- P(j);N_PINQ(F)::QAB1(F)
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).