MESON Chess Problem Database
Problem Display
PID: 244507 (8/8/1p6/1p2p3/pRppQ3/n1kN1p2/1R1p1P2/1B1K4 w - - 0 1)
Fomichev, Evgeny Vasilevich
Problemist Ukraini, 2010
#2
7 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sxb1
- 2.Rc2#
- 1...Sc2
- 2.Rxc2#
- 1...cxd3
- 2.Qxd3#
- 1...Sxb1
- Tries
- 1.Sc5?
- 1...Sxb1
- 2.Qc2#
- 1...Sc2
- 2.Qxc2#
- 1...d3
- 2.Qxe5#
- 1...bxc5!
- 1...Sxb1
- 1.Sxe5?
- 1...Sxb1
- 2.Qc2#
- 1...Sc2
- 2.Qxc2#
- 1...d3!
- 1...Sxb1
- 1.Ba2?
- 1...Sb1
- 2.Rc2#
- 1...Sc2
- 2.Rxc2#
- 1...cxd3!
- 1...Sb1
- 1.Bc2?
- 1...Sxc2
- 2.Rxc2#
- 1...cxd3
- 2.Qxd3#
- 1...Sb1!
- 1...Sxc2
- 1.Ra2?
- threat
- 2.Rxa3#
- 1...Sxb1
- 2.Rc2#
- 1...Sc2
- 2.Rxc2#
- 1...cxd3!
- threat
- 1.Rxd2?
- 1...Sxb1
- 2.Rc2#
- 1...Sc2
- 2.Rxc2#
- 1...cxd3!
- 1...Sxb1
- 1.Rxb5?
- 1...Sxb1
- 2.Rc2#
- 1...cxd3
- 2.Qxd3#
- 1...Sc2
- 2.Rxc2#
- 1...Sxb5!
- 1...Sxb1
- 1.Qxf3?
- 1...Sxb1
- 2.Rc2#
- 1...cxd3
- 2.Qxd3#
- 1...Sc2
- 2.Rxc2#
- 1...e4!
- 1...Sxb1
- 1.Qf5?
- 1...Sxb1
- 2.Rc2#
- 1...cxd3
- 2.Qxd3#
- 1...Sc2
- 2.Rxc2#
- 1...e4!
- 1...Sxb1
- 1.Qg6?
- 1...Sxb1
- 2.Rc2#
- 1...cxd3
- 2.Qxd3#
- 1...Sc2
- 2.Rxc2#
- 1...e4!
- 1...Sxb1
- 1.Qh7?
- 1...Sxb1
- 2.Rc2#
- 1...cxd3
- 2.Qxd3#
- 1...Sc2
- 2.Rxc2#
- 1...e4!
- 1...Sxb1
- 1.Qe2?
- threat
- 2.Qxd2#
- 1...Sxb1
- 2.Rc2#
- 1...fxe2+!
- threat
- 1.Qe3?
- threat
- 2.Qxd2#
- 1...Sxb1
- 2.Rc2#
- 1...dxe3!
- threat
- 1.Sc5?
- Keys
- 1.Se1!
- 1...dxe1Q+
- 2.Qxe1#
- 1...dxe1R+
- 2.Qxe1#
- 1...Sxb1
- 2.Qc2#
- 1...dxe1S
- 2.Qxe1#
- 1...dxe1B
- 2.Qxe1#
- 1...Sc2
- 2.Qxc2#
- 1...d3
- 2.Qxe5#
- 1...dxe1Q+
- 1.Se1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- S(b);N_GUARD,XB(A)::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(f);OGATE,XS(E)::QAR1(G),XP(f)
- Tries
- Try
- S(E);
- Vars
- S(b);N_GUARD,XB(A)::QAR1(G)
- S(b);N_GUARD::QAR1(G),XS(b)
- P(g);OGATEB::QAB(G),XP(i)
- Refutation
- P(j);XS(E)
- Try
- S(E);XP(i)
- Vars
- S(b);N_GUARD,XB(A)::QAR1(G)
- S(b);N_GUARD::QAR1(G),XS(b)
- Refutation
- P(g);
- Try
- B(A);
- Vars
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(f);XS(E)
- Try
- B(A);
- Vars
- S(b);OGATE,XB(A)::R1(C),XS(b)
- P(f);OGATE,XS(E)::QAR1(G),XP(f)
- Refutation
- S(b);
- Try
- R(C);
- Threat
- R(C),XS(b)
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(f);XS(E)
- Try
- R(C);XP(a)
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(f);XS(E)
- Try
- R(F);XP(h)
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- P(f);OGATE,XS(E)::QAR1(G),XP(f)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- S(b);XR(F)
- Try
- Q(G);XP(d)
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- P(f);OGATE,P_SPINP(f),XS(E)::QAR1(G),XP(f)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(i);
- Try
- Q(G);
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- P(f);OGATE,XS(E)::QAR1(G),XP(f)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(i);
- Try
- Q(G);
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- P(f);OGATE,XS(E)::QAR1(G),XP(f)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(i);
- Try
- Q(G);
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- P(f);OGATE,XS(E)::QAR1(G),XP(f)
- S(b);N_GUARD::R1(C),XS(b)
- Refutation
- P(i);
- Try
- Q(G);
- Threat
- QAB1(G),XP(a)
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- Refutation
- P(d);CHECK,XQ(G)
- Try
- Q(G);
- Threat
- QAB1(G),XP(a)
- Vars
- S(b);N_GUARD,XB(A)::R1(C)
- Refutation
- P(g);XQ(G)
- Try
- Actual
- S(E);
- Vars
- P(a);CHECK,OGATE,XS(E)::QAB(G),XQ(a)
- P(a);CHECK,OGATE,XS(E)::QAB(G),XR(a)
- S(b);N_GUARD,XB(A)::QAR1(G)
- P(a);OGATE,XS(E)::QAB(G),XS(a)
- P(a);OGATE,XS(E)::QAB(G),XB(a)
- S(b);N_GUARD::QAR1(G),XS(b)
- P(g);OGATEB::QAB(G),XP(i)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).