MESON Chess Problem Database
Problem Display
PID: 244827 (2b1r3/8/6n1/b7/3N3B/r6B/1ppQRPPp/qN1n1k1K w - - 0 1)
Feoktistov, Aleksandr Fedorovich
Pat a Mat, 2017
#2
9 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.g4#
- 1...Rc3
- 2.Qe1#
- 1...Ra4
- 2.g4#
- 1...Rxe2
- 2.Qxe2#
- 1...Re6
- 2.g3#
- 1...Rd8
- 2.Re1#
- 1...Rf8
- 2.Re1#
- 1...Rg8
- 2.Re1#
- 1...Rh8
- 2.Re1#
- 1...Bxd2
- 2.Sxd2#
- 1...Bc3
- 2.g4#
- 1...Bb6
- 2.Qe1#
- 1...Bc7
- 2.Qe1#
- 1...Bd8
- 2.Qe1#
- 1...Ba6
- 2.g3#
- 1...Be6
- 2.Re1#
- 1...Sxf2+
- 2.Rxf2#
- 1...Sc3
- 2.Qe1#
- 2.g4#
- 1...Se3
- 2.Re1#
- 1...Se5
- 2.Re1#
- 1...Se7
- 2.Re1#
- 1...Ra2
- Tries
- 1.Sc3?
- threat
- 2.Qe1#
- 2.g4#
- 1...Sxf2+
- 2.Rxf2#
- 1...Rxc3
- 2.Qe1#
- 1...Rxe2
- 2.Qxe2#
- 2.g4#
- 1...Bxc3
- 2.g4#
- 1...Bxh3
- 2.Qe1#
- 1...Sxc3
- 2.g4#
- 1...Sxh4
- 2.Qe1#
- 1...Re3
- 2.Qe1#
- 1...Bg4
- 2.Qe1#
- 1...Bb7
- 2.Qe1#
- 1...Sf4
- 2.Qe1#
- 1...Se3!
- threat
- 1.Se6?
- threat
- 2.Re1#
- 2.g3#
- 1...Sxf2+
- 2.Rxf2#
- 1...Rxh3
- 2.Re1#
- 1...Rxe6
- 2.g3#
- 1...Bxe6
- 2.Re1#
- 1...Sxh4
- 2.Re1#
- 1...Re3
- 2.g3#
- 1...Rg3
- 2.Re1#
- 1...Bb7
- 2.Re1#
- 1...Se3
- 2.Re1#
- 1...Sf4
- 2.Re1#
- 1...Bxd2!
- threat
- 1.Re6?
- threat
- 2.Qe2#
- 2.g3#
- 1...Sxf2+
- 2.Qxf2#
- 1...Rxh3
- 2.Qe2#
- 1...Rxe6
- 2.g3#
- 1...Bxd2
- 2.Sxd2#
- 1...Bxe6
- 2.Qe2#
- 1...Sxh4
- 2.Qe2#
- 1...c1S
- 2.g3#
- 1...Re3
- 2.g3#
- 1...Rg3
- 2.Qe2#
- 1...Ba6
- 2.g3#
- 1...Bb7
- 2.Qe2#
- 1...Sc3
- 2.Qe1#
- 2.g3#
- 2.g4#
- 1...Se3
- 2.Qe2#
- 1...Sf4!
- threat
- 1.Rxe8?
- threat
- 2.Re1#
- 2.Qe2#
- 1...Sxf2+
- 2.Qxf2#
- 1...Bxd2
- 2.Sxd2#
- 1...c1S
- 2.Re1#
- 1...Bg4
- 2.Re1#
- 1...Ba6
- 2.Re1#
- 2.g3#
- 1...Be6
- 2.Qe2#
- 1...Sc3
- 2.Re1#
- 2.Qe1#
- 2.g4#
- 1...Se3
- 2.Qe2#
- 1...Sf4
- 2.Re1#
- 1...Se5
- 2.Qe2#
- 1...Se7
- 2.Qe2#
- 1...Re3!
- threat
- 1.Qxa5?
- threat
- 2.Sd2#
- 2.Qe1#
- 1...Sxf2+
- 2.Rxf2#
- 1...Qxb1
- 2.Qe1#
- 1...Rxa5
- 2.Sd2#
- 2.g4#
- 1...cxb1Q
- 2.Qe1#
- 1...cxb1S
- 2.Qe1#
- 1...cxb1B
- 2.Qe1#
- 1...cxb1R
- 2.Qe1#
- 1...c1Q
- 2.Qe1#
- 1...c1B
- 2.Qe1#
- 1...Rc3
- 2.Sd2#
- 1...Rd3
- 2.Qe1#
- 1...Sc3
- 2.Sd2#
- 2.g4#
- 1...Rxe2!
- threat
- 1.Sc3?
- Keys
- 1.Qc3!
- threat
- 2.Sd2#
- 2.g4#
- 1...Sxf2+
- 2.Rxf2#
- 1...Qxb1
- 2.g4#
- 1...Rxc3
- 2.Sd2#
- 1...Rxe2
- 2.g4#
- 1...Bxc3
- 2.g4#
- 1...Bxh3
- 2.Sd2#
- 1...Sxh4
- 2.Sd2#
- 1...cxb1Q
- 2.g4#
- 1...cxb1S
- 2.g4#
- 1...cxb1B
- 2.g4#
- 1...cxb1R
- 2.g4#
- 1...c1Q
- 2.g4#
- 1...c1B
- 2.g4#
- 1...Re3
- 2.Sd2#
- 1...Bg4
- 2.Sd2#
- 1...Bb7
- 2.Sd2#
- 1...Se3
- 2.Sd2#
- 2.Re1#
- 1...Sf4
- 2.Sd2#
- threat
- 1.Qc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 13
- REMOVED MATES = 16
- Sets
- R(g);N_GUARD::B(G)+P(F)
- R(g);S_CUTB(h)::QAR1(C)
- R(k);OGATE,XR(D)::QAB1(C),XR(k)
- R(k);S_CUTB(j)::B(G)+P(F)
- R(k);N_GUARD::R1(D)
- B(h);XQ(C)::S(A),XB(h)
- B(h);S_CUTR(g)::B(G)+P(F)
- B(h);N_GUARD::QAR1(C)
- B(j);N_GUARD::B(G)+P(F)
- B(j);S_CUTR(k)::R1(D)
- S(b);CHECK,OGATE,XP(E)::R1(D),XS(b)
- S(b);S_CUTR(k)::R1(D)
- S(i);S_CUTR(k)::R1(D)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::R1(D),XS(b)
- R(g);XS(A)::QAR1(C)
- B(h);XS(A)::B(G)+P(F)
- B(j);XB(G)::QAR1(C)
- S(b);XS(A)::B(G)+P(F)
- S(i);XB(I)::QAR1(C)
- R(k);::QAR1(C)
- B(j);::QAR1(C)
- B(j);P_PINP(F)::QAR1(C)
- S(i);::QAR1(C)
- Refutation
- S(b);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::R1(D),XS(b)
- R(g);XB(G)::R1(D)
- R(k);XS(H)::B(G)+P(F)
- B(j);XS(H)::R1(D)
- S(i);XB(I)::R1(D)
- R(g);::B(G)+P(F)
- R(g);::R1(D)
- B(j);P_PINP(F)::R1(D)
- S(b);::R1(D)
- S(i);::R1(D)
- Refutation
- B(h);XQ(C)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::QAR1(C),XS(b)
- R(g);XB(G)::QAB1(C)
- R(k);XR(D)::B(G)+P(F)
- B(h);XQ(C)::S(A),XB(h)
- B(j);XR(D)::QAB1(C)
- S(i);XB(I)::QAB1(C)
- P(e);::B(G)+P(F)
- R(g);::B(G)+P(F)
- R(g);::QAB1(C)
- B(j);::B(G)+P(F)
- B(j);P_PINP(F)::QAB1(C)
- S(b);::QAB1(C)
- Refutation
- S(i);
- Try
- R(D);XR(k)
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::QAR1(C),XS(b)
- B(h);XQ(C)::S(A),XB(h)
- P(e);::R1(D)
- B(j);::R1(D)
- B(j);::QAB1(C)
- S(b);::QAB1(C)
- S(i);::R1(D)
- S(i);::QAB1(C)
- Refutation
- R(g);
- Try
- Q(C);XB(h)
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::R1(D),XS(b)
- Q(a);XS(A)::QAR1(C)
- P(e);XS(A)::QAR1(C)
- P(e);::QAR1(C)
- R(g);::S(A)
- R(g);::QAR1(C)
- Refutation
- R(k);XR(D)
- Try
- Actual
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,XP(E)::R1(D),XS(b)
- Q(a);XS(A)::B(G)+P(F)
- R(g);XQ(C)::S(A)
- R(k);XR(D)::B(G)+P(F)
- B(h);XQ(C)::B(G)+P(F)
- B(j);XB(G)::S(A)
- S(i);XB(I)::S(A)
- P(e);XS(A)::B(G)+P(F)
- P(e);::B(G)+P(F)
- R(k);::S(A)
- B(j);::S(A)
- B(j);P_PINP(F)::S(A)
- S(i);::S(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).