MESON Chess Problem Database
Problem Display
PID: 215537 (2r1n3/1p2p1b1/8/NR1Bp3/p2k4/B2b1Pp1/3PQ3/3nK3 w - - 0 1)
Caliani, Alfonso
Suomen Shakki, 1958
#2
8 + 11
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bc4
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Bxb5
- 2.Qe4#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Bc4
- Tries
- 1.Bb2+?
- 1...Sxb2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Rc3!
- 1...Sxb2
- 1.Bc4?
- threat
- 2.Rd5#
- 2.Qxd3#
- 1...Bxe2
- 2.Rd5#
- 1...Bxc4
- 2.Qe4#
- 1...Rc5
- 2.Bxc5#
- 2.Qxd3#
- 1...Rd8
- 2.Bc5#
- 2.Qxd3#
- 1...Bb1
- 2.Rd5#
- 1...Bc2
- 2.Rd5#
- 1...Be4
- 2.Qxe4#
- 1...Bf5
- 2.Rd5#
- 1...Bg6
- 2.Rd5#
- 1...Bh7
- 2.Rd5#
- 1...Sb2
- 2.Bxb2#
- 2.Rd5#
- 2.Qe3#
- 1...Sf2
- 2.Bb2#
- 2.Rd5#
- 2.Qe3#
- 1...Sc3
- 2.Qxd3#
- 2.Qe3#
- 1...Se3
- 2.Bb2#
- 2.Qxd3#
- 2.Qxe3#
- 1...Sf6
- 2.Qxd3#
- 2.Qxe5#
- 1...Sc7
- 2.Bc5#
- 2.Qxd3#
- 1...e4
- 2.Rd5#
- 1...e6
- 2.Qxd3#
- 1...Rxc4!
- threat
- 1.Bf7?
- threat
- 2.Rd5#
- 1...Bxb5
- 2.Qe4#
- 1...Rc5
- 2.Bxc5#
- 1...Rd8
- 2.Bc5#
- 1...Bc4
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qxe5#
- 1...Sc7
- 2.Bc5#
- 1...e6!
- threat
- 1.Bg8?
- threat
- 2.Rd5#
- 1...Bxb5
- 2.Qe4#
- 1...Rc5
- 2.Bxc5#
- 1...Rd8
- 2.Bc5#
- 1...Bc4
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qxe5#
- 1...Sc7
- 2.Bc5#
- 1...e6!
- threat
- 1.Bb2+?
- Keys
- 1.Be6!
- threat
- 2.Rd5#
- 1...Bxb5
- 2.Qe4#
- 1...Rc5
- 2.Bxc5#
- 1...Rd8
- 2.Bc5#
- 1...Bc4
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qxe5#
- 1...Sc7
- 2.Bc5#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- B(b);N_GUARD::QAR1(C)
- B(b);N_GUARD::QAR1(C),XB(b)
- B(b);N_GUARD,XR(G)::QAR1(C)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- Tries
- Try
- B(D);CHECK
- Vars
- S(a);XB(D)::QAB1(C)
- S(a);P_SPINS(a)::QAB1(C)
- Refutation
- R(j);P_SPINR(j)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(b);XQ(C)::R1(G)
- B(b);N_GUARD,XB(H)::QAR1(C)
- B(b);::R1(G)
- B(b);N_GUARD::QAR1(C),XB(b)
- P(f);::R1(G)
- P(h);::QAR1(C),XB(b)
- Refutation
- R(j);XB(H)
- Try
- B(H);
- Threat
- R1(G)
- Vars
- B(b);N_GUARD,XR(G)::QAR1(C)
- R(j);N_GUARD::B(D),XR(j)
- R(j);N_GUARD::B(D)
- B(b);N_GUARD::QAR1(C)
- B(b);N_GUARD::QAR1(C),XB(b)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(k);S_CUTB(i)::QAB1(C),XP(f)
- S(k);S_CUTR(j)::B(D)
- Refutation
- P(h);
- Try
- B(H);
- Threat
- R1(G)
- Vars
- B(b);N_GUARD,XR(G)::QAR1(C)
- R(j);N_GUARD::B(D),XR(j)
- R(j);N_GUARD::B(D)
- B(b);N_GUARD::QAR1(C)
- B(b);N_GUARD::QAR1(C),XB(b)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(k);S_CUTB(i)::QAB1(C),XP(f)
- S(k);S_CUTR(j)::B(D)
- Refutation
- P(h);
- Try
- Actual
- B(H);
- Threat
- R1(G)
- Vars
- B(b);N_GUARD,XR(G)::QAR1(C)
- R(j);N_GUARD::B(D),XR(j)
- R(j);N_GUARD::B(D)
- B(b);N_GUARD::QAR1(C)
- B(b);N_GUARD::QAR1(C),XB(b)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(k);S_CUTB(i)::QAB1(C),XP(f)
- S(k);S_CUTR(j)::B(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).