MESON Chess Problem Database
Problem Display
PID: 255571 (4Nr2/3PB2r/K1pPB2R/Q1N1kpRp/5nP1/2P5/8/7b w - - 0 1)
Derevchuk, Oleksandr Andrinovich
Problemist Ukraini, 2021
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Bxf6#
- 1...Rxe8
- 2.Rxf5#
- 1...Rg8
- 2.Bf6#
- 2.Rxf5#
- 1...Rh8
- 2.Bf6#
- 2.Rxf5#
- 1...Be4
- 2.Sd3#
- 1...Rf6
- Tries
- 1.Bxf5?
- threat
- 2.Sd3#
- 1...Kd5
- 2.Be6#
- 1...Rxf5
- 2.Rxf5#
- 1...Sd3
- 2.Sxd3#
- 1...Bd5!
- threat
- 1.Bxf8?
- threat
- 2.Rxf5#
- 1...Be4
- 2.Sd3#
- 1...Rf7!
- threat
- 1.Qb4?
- threat
- 2.Qd4#
- 1...Se2
- 2.Sd3#
- 1...Sxe6!
- threat
- 1.Qa4?
- threat
- 2.Qd4#
- 1...Se2
- 2.Sd3#
- 1...Sxe6!
- threat
- 1.Bxf5?
- Keys
- 1.Rf6!
- threat
- 2.Rgxf5#
- 1...Rxf6
- 2.Bxf6#
- 1...Be4
- 2.Sd3#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(h);N_GUARD::B(K),XR(h)
- R(h);N_GUARD,XS(L)::R1(E),XP(d)
- B(a);SBLOCK::QAR(C)+S(D),DCHECK
- Tries
- Try
- B(H);XP(d)
- Threat
- QAR(C)+S(D),DCHECK
- Vars
- K(c);P-FLIGHT::R(E)+B(H),DCHECK
- R(h);OGATE,P_SPINR(h),XB(H)::R1(E),XR(h)
- S(b);::QAR(C)+S(D),DCHECK,XS(b)
- Refutation
- B(a);
- Try
- B(K);XR(h)
- Threat
- R1(E),XP(d)
- Vars
- B(a);SBLOCK::QAR(C)+S(D),DCHECK
- Refutation
- R(g);
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- S(b);N_GUARD::S(D)
- Refutation
- S(b);XB(H)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- S(b);N_GUARD::S(D)
- Refutation
- S(b);XB(H)
- Try
- Actual
- R(I);
- Threat
- R1(E),XP(d)
- Vars
- R(h);OGATE,XR(I)::B(K),XR(h)
- B(a);SBLOCK::QAR(C)+S(D),DCHECK
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).