MESON Chess Problem Database
Problem Display
PID: 242133 (3b4/8/Bnb3N1/8/pP2pR2/3Nkp2/2K2prR/B4Q2 w - - 0 1)
Shanshin, Valery Yurevich
Variantim, 2015
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Qxf2#
- 1...Rg3
- 2.Qxf2#
- 1...Rg4
- 2.Qxf2#
- 1...Rg5
- 2.Qxf2#
- 1...Rxg6
- 2.Qxf2#
- 1...exd3+
- 2.Qxd3#
- 1...Rg1
- Tries
- 1.Sb2?
- threat
- 2.Sd1#
- 1...Kd4
- 2.Qd3#
- 1...Rxg6!
- threat
- 1.Sc5?
- threat
- 2.Qc1#
- 1...Rg1
- 2.Qxf2#
- 1...Bb5
- 2.Rxe4#
- 1...Sc4!
- threat
- 1.Sde5?
- threat
- 2.Qc1#
- 1...Rg1
- 2.Qxf2#
- 1...Sc4
- 2.Sxc4#
- 1...Bb5!
- threat
- 1.Rxg2?
- threat
- 2.Qxf2#
- 1...exd3+
- 2.Qxd3#
- 1...Bh4!
- threat
- 1.Sb2?
- Keys
- 1.Sxf2!
- threat
- 2.Qe1#
- 1...Rxf2+
- 2.Qxf2#
- 1...Rxg6
- 2.Qc1#
- 1...Rg1
- 2.Sd1#
- 1...Bb5
- 2.Rxe4#
- threat
- 1.Sxf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::QAB1(B),XP(a)
- R(b);N_GUARD,XS(I)::QAB1(B),XP(a)
- P(f);CHECK,OGATE,XS(E)::QAR1(B),XP(f)
- Tries
- Try
- S(E);
- Threat
- S(E)
- Vars
- K(c);P_SPINP(f),S_FLIGHT::QAR1(B)
- Refutation
- R(b);XS(I)
- Try
- S(E);
- Threat
- QAB(B)
- Vars
- R(b);N_GUARD::QAB1(B),XP(a)
- B(h);N_GUARD::R1(G),XP(f)
- Refutation
- S(g);
- Try
- S(E);
- Threat
- QAB(B)
- Vars
- R(b);N_GUARD::QAB1(B),XP(a)
- S(g);N_GUARD::S(E),XS(g)
- Refutation
- B(h);
- Try
- R(D);XR(b)
- Threat
- QAB1(B),XP(a)
- Vars
- P(f);CHECK,OGATE,XS(E)::QAR1(B),XP(f)
- Refutation
- B(i);
- Try
- Actual
- S(E);P_SPINS(E),XP(a)
- Threat
- QAR2(B)
- Vars
- R(b);CHECK,OGATE,XS(E)::QAB1(B),XR(b)
- R(b);N_PINS(E),XS(I)::QAB(B)
- R(b);N_PINS(E)::S(E)
- B(h);N_GUARD::R1(G),XP(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).