MESON Chess Problem Database
Problem Display
PID: 151755 (8/K1N3B1/b2p4/3B1pn1/R1nQrkp1/6p1/5bp1/4NR2 w - - 0 1)
Redaelli, Riccardo
L'Alfiere di Re, 1925
#2
8 + 11
| 133 | The Problemist Supplement | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rxd4
- 2.Sxg2#
- 1...Sb6
- 2.Qd2#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...Rxd4
- Tries
- 1.Bxe4?
- threat
- 2.Sxg2#
- 2.Sd3#
- 2.Sd5#
- 1...Sxe4
- 2.Se6#
- 2.Bh6#
- 1...gxf1Q
- 2.Sd5#
- 1...gxf1S
- 2.Sg2#
- 2.Sd3#
- 2.Sd5#
- 1...gxf1B
- 2.Sd5#
- 1...gxf1R
- 2.Sg2#
- 2.Sd3#
- 2.Sd5#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...g1Q
- 2.Sd3#
- 2.Sd5#
- 1...g1S
- 2.Sg2#
- 2.Sd3#
- 2.Sd5#
- 1...g1B
- 2.Sg2#
- 2.Sd3#
- 2.Sd5#
- 1...g1R
- 2.Sd3#
- 2.Sd5#
- 1...Bb7
- 2.Sxg2#
- 2.Sd3#
- 1...Sb2
- 2.Sxg2#
- 2.Sd5#
- 1...Sd2
- 2.Sxg2#
- 2.Sd5#
- 1...Sa3
- 2.Sxg2#
- 2.Sd5#
- 1...Se3
- 2.Qxd6#
- 1...Sa5
- 2.Sxg2#
- 2.Sd5#
- 1...Se5
- 2.Sxg2#
- 2.Sd5#
- 1...Sb6
- 2.Sxg2#
- 2.Qd2#
- 1...d5
- 2.Sxg2#
- 2.Sd3#
- 2.Sxd5#
- 1...fxe4!
- threat
- 1.Bb7?
- threat
- 2.Sd5#
- 1...Rxd4
- 2.Sxg2#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...Se3
- 2.Qxd6#
- 1...Sb6
- 2.Qd2#
- 1...d5
- 2.Sxd5#
- 1...Bxb7!
- threat
- 1.Ba8?
- threat
- 2.Sd5#
- 1...Rxd4
- 2.Sxg2#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...Se3
- 2.Qxd6#
- 1...Sb6
- 2.Qd2#
- 1...d5
- 2.Sxd5#
- 1...Bb7!
- threat
- 1.Rxf2+?
- 1...Sf3
- 2.Se6#
- 2.Bh6#
- 1...gxf2!
- 1...Sf3
- 1.Bxe4?
- Keys
- 1.Bc6!
- threat
- 2.Sd5#
- 1...Rxd4
- 2.Sxg2#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...Se3
- 2.Qxd6#
- 1...Sb6
- 2.Qd2#
- 1...d5
- 2.Sxd5#
- threat
- 1.Bc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(e);N_SPINR(e),XQ(D)::S(A),XP(b)
- S(d);N_PINQ(D)::QAB(D)
- S(i);N_GUARD,N_SPINB(a)::S(G)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- Tries
- Try
- B(E);XR(e)
- Threat
- DUALS(3)
- Vars
- P(b);N_SPINB(a),XR(B)::S(G)
- S(i);N_GUARD,N_SPINB(a)::S(G)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- S(d);N_PINQ(D),SBLOCK::QAB(D),XP(k)
- Refutation
- P(h);P_SPINP(h),XB(E)
- Try
- B(E);
- Threat
- S(G)
- Vars
- R(e);N_SPINR(e),XQ(D)::S(A),XP(b)
- S(i);N_GUARD,N_SPINB(a)::S(G)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- S(d);N_PINQ(D),SBLOCK::QAB(D),XP(k)
- S(d);N_PINQ(D)::QAB(D)
- P(k);::S(G),XP(k)
- Refutation
- B(j);XB(E)
- Try
- B(E);
- Threat
- S(G)
- Vars
- R(e);N_SPINR(e),XQ(D)::S(A),XP(b)
- S(i);N_GUARD,N_SPINB(a)::S(G)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- S(d);N_PINQ(D),SBLOCK::QAB(D),XP(k)
- S(d);N_PINQ(D)::QAB(D)
- P(k);::S(G),XP(k)
- Refutation
- B(j);
- Try
- R(B);CHECK,N_SPINQ(D),XB(a)
- Refutation
- P(c);XR(B)
- Try
- Actual
- B(E);
- Threat
- S(G)
- Vars
- R(e);N_SPINR(e),XQ(D)::S(A),XP(b)
- S(i);N_GUARD,N_SPINB(a)::S(G)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- S(d);N_PINQ(D),SBLOCK::QAB(D),XP(k)
- S(d);N_PINQ(D)::QAB(D)
- P(k);::S(G),XP(k)
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).