MESON Chess Problem Database
Problem Display
PID: 110124 (3K4/n1p2B2/1Npk1p2/2b3N1/3Pn3/4R3/r7/Q1qR1rBb w - - 0 1)
Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)
La Settimana Enigmistica, 1936
#2
9 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Sc4#
- 1...Qd2
- 2.Sc4#
- 1...Qa3
- 2.Sc4#
- 1...Qxe3
- 2.Sc4#
- 1...Qxa1
- 2.Sc4#
- 1...Qb1
- 2.Sc4#
- 1...Qxd1
- 2.Sc4#
- 1...Qc4
- 2.Sxc4#
- 1...Rf3
- 2.Sxe4#
- 1...Rg2
- 2.Sxe4#
- 1...Bxd4
- 2.Qxd4#
- 1...Sd2
- 2.Re6#
- 1...Sf2
- 2.Bh2#
- 2.Re6#
- 1...Sc3
- 2.Sc4#
- 2.Re6#
- 1...Sg3
- 2.Re6#
- 1...Sb5
- 2.Sc8#
- 1...Sc8
- 2.Sxc8#
- 1...Qb2
- Tries
- 1.Bh2+?
- 1...Rf4
- 2.Bxf4#
- 1...Sg3
- 2.Re6#
- 1...Rxh2!
- 1...Rf4
- 1.Rxe4?
- threat
- 2.Re6#
- 2.dxc5#
- 1...Rxd1
- 2.Re6#
- 1...Rxg1
- 2.Re6#
- 1...Bxe4
- 2.Sxe4#
- 2.dxc5#
- 1...Bxd4
- 2.Qxd4#
- 1...cxb6
- 2.dxc5#
- 1...Qe3
- 2.Sc4#
- 1...Qc4
- 2.Sxc4#
- 2.dxc5#
- 1...Re1
- 2.dxc5#
- 1...Rff2
- 2.Re6#
- 1...Rd2
- 2.Re6#
- 1...Re2
- 2.dxc5#
- 1...Raf2
- 2.Re6#
- 1...Ba3
- 2.Re6#
- 1...Bb4
- 2.Re6#
- 1...Bxb6!
- threat
- 1.Bh2+?
- Keys
- 1.Rf3!
- threat
- 2.Sxe4#
- 2.dxc5#
- 1...Qxg5
- 2.Sc4#
- 2.dxc5#
- 1...Qxa1
- 2.Sxe4#
- 2.Sc4#
- 1...Qxd1
- 2.Sxe4#
- 2.Sc4#
- 1...Rxd1
- 2.Sxe4#
- 1...Rxg1
- 2.Sxe4#
- 1...Rxa1
- 2.Sxe4#
- 1...Bxf3
- 2.dxc5#
- 1...Bxd4
- 2.Qxd4#
- 1...Bxb6
- 2.Sxe4#
- 1...Sxg5
- 2.dxc5#
- 1...fxg5
- 2.dxc5#
- 1...Qb2
- 2.Sxe4#
- 2.Sc4#
- 1...Qd2
- 2.Sxe4#
- 2.Sc4#
- 1...Qe3
- 2.Sc4#
- 1...Qf4
- 2.Sc4#
- 2.dxc5#
- 1...Qb1
- 2.Sc4#
- 2.dxc5#
- 1...Qc2
- 2.dxc5#
- 1...Qc3
- 2.Sxe4#
- 1...Re1
- 2.dxc5#
- 1...Rff2
- 2.Sxe4#
- 1...Rb2
- 2.Sxe4#
- 1...Rd2
- 2.Sxe4#
- 1...Re2
- 2.dxc5#
- 1...Raf2
- 2.Sxe4#
- 1...Ba3
- 2.Sxe4#
- 1...Bb4
- 2.Sxe4#
- 1...Sd2
- 2.Bh2#
- 1...Sf2
- 2.Rxf6#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.dxc5#
- 1...f5
- 2.dxc5#
- threat
- 1.Rf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 20
- REMOVED MATES = 11
- Sets
- Q(a);N_GUARD::S(G)
- Q(a);N_GUARD,XR(D)::S(G)
- Q(a);N_GUARD,XQ(A)::S(G)
- Q(a);N_GUARD,XR(B)::S(G)
- Q(a);N_GUARD::S(G),XQ(a)
- R(b);S_CUTB(c)::S(F),XS(e)
- R(d);S_CUTB(c)::S(F),XS(e)
- B(f);OGATE,P_SPINB(f),XP(E)::QAR2(A),XB(f)
- S(e);OGATE::R1(D)
- S(j);N_GUARD::S(G)
- S(j);N_GUARD::S(G),XS(j)
- Tries
- Try
- B(C);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::B(C),XR(b)
- S(e);OGATE,P_SPINS(e)::R1(D)
- Refutation
- R(d);XB(C)
- Try
- R(D);XS(e)
- Threat
- DUALS(2)
- Vars
- R(b);XR(B)::R1(D)
- R(b);XB(C)::R1(D)
- B(f);OGATE,P_SPINB(f),XP(E)::QAR2(A),XB(f)
- P(k);XS(G)::R(B)+P(E)DCHECK,XB(f)
- Q(a);N_GUARD::S(G)
- R(b);::R(B)+P(E)DCHECK,XB(f)
- R(b);::R1(D)
- R(d);::R1(D)
- R(d);::R(B)+P(E)DCHECK,XB(f)
- B(f);::R1(D)
- Refutation
- B(f);XS(G)
- Try
- Actual
- R(D);
- Threat
- DUALS(2)
- Vars
- R(b);XR(B)::S(F),XS(e)
- R(b);XB(C)::S(F),XS(e)
- R(d);XQ(A)::S(F),XS(e)
- B(c);XR(D)::R(B)+P(E)DCHECK,XB(f)
- B(f);OGATE,P_SPINB(f),XP(E)::QAR2(A),XB(f)
- B(f);XS(G)::S(F),XS(e)
- S(e);XS(F)::R(B)+P(E)DCHECK,XB(f)
- P(i);XS(F)::R(B)+P(E)DCHECK,XB(f)
- Q(a);N_GUARD::S(G)
- Q(a);::R(B)+P(E)DCHECK,XB(f)
- Q(a);::S(F),XS(e)
- R(b);::R(B)+P(E)DCHECK,XB(f)
- R(b);::S(F),XS(e)
- R(d);::S(F),XS(e)
- R(d);::R(B)+P(E)DCHECK,XB(f)
- B(f);::S(F),XS(e)
- S(e);N_GUARD,S_CUTQ(a),S_CUTR(d)::B(C)
- S(e);N_GUARD,S_CUTR(b)::R(D),XP(i)
- S(e);S_CUTQ(a)::S(G)
- S(e);::R(B)+P(E)DCHECK,XB(f)
- P(i);::R(B)+P(E)DCHECK,XB(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).