MESON Chess Problem Database
Problem Display
PID: 148336 (1bb2r2/7N/1N1n2B1/4BR2/1K2krqQ/1p1p1pn1/5P2/2R5 w - - 0 1)
Shapovalov, Evgeny Ivanovich
4th Prize, Shakhmatnaya kompozitsiya, 2009
#2
9 + 11
| 23 | Die Schwalbe | 2012 |
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Sg5#
- 2.Qxf4#
- 1...Qxf5
- 2.Qxf4#
- 1...Qh5
- 2.Qxf4#
- 1...Qg5
- 2.Sxg5#
- 1...Qxg6
- 2.Qxf4#
- 1...Rf6
- 2.Sxf6#
- 1...Rd8
- 2.Sf6#
- 1...Re8
- 2.Sf6#
- 1...Rg8
- 2.Sf6#
- 1...Rh8
- 2.Sf6#
- 1...Sh1
- 2.Re1#
- 1...Sgxf5
- 2.Re1#
- 1...Sh5
- 2.Re1#
- 1...Sc4
- 2.Rxc4#
- 1...Sb7
- 2.Rc4#
- 1...Sf7
- 2.Sf6#
- 2.Rc4#
- 1...Se8
- 2.Rc4#
- 1...Qh3
- Tries
- 1.Ba1?
- threat
- 2.Re5#
- 1...Qxf5
- 2.Sg5#
- 1...R4xf5
- 2.Qxg4#
- 1...R8xf5
- 2.Sf6#
- 1...Bxf5
- 2.Qe7#
- 1...Sgxf5
- 2.Re1#
- 1...Sdxf5
- 2.Rc4#
- 1...b2!
- threat
- 1.Bc3?
- threat
- 2.Re5#
- 1...Qxf5
- 2.Sg5#
- 1...R4xf5
- 2.Qxg4#
- 1...R8xf5
- 2.Sf6#
- 1...Bxf5
- 2.Qe7#
- 1...Sgxf5
- 2.Re1#
- 1...Sdxf5!
- threat
- 1.Bxd6?
- threat
- 2.Rc4#
- 2.Rxf4#
- 1...Kd4
- 2.Rc4#
- 2.Rd5#
- 1...Qxf5
- 2.Rc4#
- 2.Qxf4#
- 1...Qxg6
- 2.Qxf4#
- 1...R4xf5
- 2.Rc4#
- 2.Qxg4#
- 1...R8xf5
- 2.Rc4#
- 1...Bxf5
- 2.Rc4#
- 1...Sxf5
- 2.Rc4#
- 1...d2
- 2.Rxf4#
- 1...Ba6
- 2.Rxf4#
- 1...Be6
- 2.Rxf4#
- 1...Se2
- 2.Rxf4#
- 1...Bxd6+!
- threat
- 1.Qxg3?
- threat
- 2.Re1#
- 1...Qxg6
- 2.Qxf4#
- 1...Sc4
- 2.Rxc4#
- 1...d2!
- threat
- 1.Ba1?
- Keys
- 1.Bb2!
- threat
- 2.Re5#
- 1...Qxf5
- 2.Sg5#
- 1...R4xf5
- 2.Qxg4#
- 1...R8xf5
- 2.Sf6#
- 1...Bxf5
- 2.Qe7#
- 1...Sgxf5
- 2.Re1#
- 1...Sdxf5
- 2.Rc4#
- threat
- 1.Bb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 13
- Sets
- Q(g);OGATE,P_SPINQ(g),P_SPINR(f),XR(F)::QAR1(D),XR(f)
- Q(g);OGATE,P_SPINR(f)::QAR1(D),XR(f)
- Q(g);N_GUARD,P_SPINR(f)::S(I),XQ(g)
- Q(g);OGATE,P_SPINR(f),XB(H)::QAR1(D),XR(f)
- R(k);N_GUARD::S(I),XR(k)
- R(k);N_GUARD::S(I)
- S(d);N_GUARD::R(A)
- S(d);N_GUARD,P_SPINS(d),XR(F)::R(A)
- S(h);N_GUARD::R(A),XS(h)
- S(h);N_GUARD::R(A)
- Tries
- Try
- B(E);
- Threat
- B(H)+R(F),DCHECK
- Vars
- Q(g);N_GUARD,P_SPINQ(g),P_SPINR(f),XR(F)::S(I)
- R(f);OGATEB,P_SPINQ(g),P_SPINR(f),XR(F)::QAR2(D),XQ(g)
- R(k);N_GUARD,P_SPINR(k),XR(F)::S(I)
- B(j);N_GUARD,P_SPINB(j),XR(F)::QAR(D)
- S(d);N_GUARD,P_SPINS(d),XR(F)::R(A)
- S(h);N_GUARD,P_SPINS(h),XR(F)::R(A)
- Refutation
- P(a);
- Try
- B(E);
- Threat
- B(H)+R(F),DCHECK
- Vars
- Q(g);N_GUARD,P_SPINQ(g),P_SPINR(f),XR(F)::S(I)
- R(f);OGATEB,P_SPINQ(g),P_SPINR(f),XR(F)::QAR2(D),XQ(g)
- R(k);N_GUARD,P_SPINR(k),XR(F)::S(I)
- B(j);N_GUARD,P_SPINB(j),XR(F)::QAR(D)
- S(d);N_GUARD,P_SPINS(d),XR(F)::R(A)
- Refutation
- S(h);P_SPINS(h),XR(F)
- Try
- B(E);XS(h)
- Threat
- DUALS(2)
- Vars
- Q(g);OGATE,P_SPINR(f),XB(H)::QAR1(D),XR(f)
- R(k);P_SPINR(k),XR(F)::R(A)
- B(j);P_SPINB(j),XR(F)::R(A)
- S(d);P_SPINS(d),XR(F)::R(A)
- P(b);::B(H)+R(F),DCHECK,XR(f)
- B(j);::B(H)+R(F),DCHECK,XR(f)
- S(d);::B(H)+R(F),DCHECK,XR(f)
- Refutation
- B(i);CHECK,XB(E)
- Try
- Q(D);XS(d)
- Threat
- R(A)
- Vars
- Q(g);N_GUARD,XB(H)::QAR1(D),XR(f)
- S(h);N_GUARD::R(A),XS(h)
- Refutation
- P(b);
- Try
- Actual
- B(E);
- Threat
- B(H)+R(F),DCHECK
- Vars
- Q(g);N_GUARD,P_SPINQ(g),P_SPINR(f),XR(F)::S(I)
- R(f);OGATEB,P_SPINQ(g),P_SPINR(f),XR(F)::QAR2(D),XQ(g)
- R(k);N_GUARD,P_SPINR(k),XR(F)::S(I)
- B(j);N_GUARD,P_SPINB(j),XR(F)::QAR(D)
- S(d);N_GUARD,P_SPINS(d),XR(F)::R(A)
- S(h);N_GUARD,P_SPINS(h),XR(F)::R(A)
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).