MESON Chess Problem Database
Problem Display
PID: 270619 (1Br2b2/7r/R2p4/KPkBP3/pR2pN2/4P3/P2Nq1b1/8 w - - 0 1)
Dowd, Steven B
Moen, Kabe
Tarnawiecki, Antonio
The Problemist Supplement, 2023
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Rc4#
- 1...Qf3
- 2.Rc4#
- 1...Qc4
- 2.Rxc4#
- 1...Qg4
- 2.Rc4#
- 1...Qxb5+
- 2.Rxb5#
- 1...Qh5
- 2.Rc4#
- 1...Qe1
- 2.Rc4#
- 1...Qf2
- 2.Rc4#
- 1...Qxe3
- 2.Rc4#
- 1...Rh1
- 2.Ba7#
- 1...Rh2
- 2.Ba7#
- 1...Rh3
- 2.Ba7#
- 1...Rh4
- 2.Ba7#
- 1...Rh5
- 2.Ba7#
- 1...Rh6
- 2.Ba7#
- 1...Ra7
- 2.Bxa7#
- 1...Re7
- 2.Bxd6#
- 1...Rh8
- 2.Ba7#
- 1...Rc6
- 2.Rxc6#
- 1...Rxb8
- 2.Rc6#
- 1...Rd8
- 2.Rc6#
- 1...Re8
- 2.Rc6#
- 1...Bf1
- 2.Sxe4#
- 1...Bh3
- 2.Sxe4#
- 1...Bh6
- 2.Bxd6#
- 1...Be7
- 2.Ba7#
- 1...Bg7
- 2.Bxd6#
- 2.Ba7#
- 1...a3
- 2.Sb3#
- 1...Qd1
- Tries
- 1.Bc4?
- threat
- 2.Se6#
- 1...Qxc4
- 2.Rxc4#
- 1...Rh6
- 2.Ba7#
- 1...Re7
- 2.Bxd6#
- 1...Re8
- 2.Rc6#
- 1...Bh3
- 2.Sxe4#
- 1...Qg4!
- threat
- 1.Bxe4?
- threat
- 2.Se6#
- 1...Qxb5+
- 2.Rxb5#
- 1...Bxe4
- 2.Sxe4#
- 1...Qc4
- 2.Rxc4#
- 1...Qg4
- 2.Sd3#
- 2.Rc4#
- 1...Rh6
- 2.Ba7#
- 1...Re7
- 2.Bxd6#
- 1...Re8
- 2.Rc6#
- 1...Bh3!
- threat
- 1.Bc6?
- threat
- 2.Se6#
- 1...Qxb5+
- 2.Rxb5#
- 1...Rxc6
- 2.Rxc6#
- 1...Qc4
- 2.Rxc4#
- 1...Qg4
- 2.Rc4#
- 1...Rh6
- 2.Ba7#
- 1...Re7
- 2.Bxd6#
- 1...Bh3
- 2.Sxe4#
- 1...Re8!
- threat
- 1.Bb7?
- threat
- 2.Se6#
- 2.Ba7#
- 1...Qxb5+
- 2.Rxb5#
- 1...Rxb8
- 2.Se6#
- 2.Rc6#
- 1...Qc4
- 2.Ba7#
- 2.Rxc4#
- 1...Qg4
- 2.Ba7#
- 2.Rc4#
- 1...Rh6
- 2.Ba7#
- 1...Re7
- 2.Bxd6#
- 2.Ba7#
- 1...Rc6
- 2.Rxc6#
- 1...Re8
- 2.Ba7#
- 2.Rc6#
- 1...Bh3
- 2.Sxe4#
- 2.Ba7#
- 1...Rxb7!
- threat
- 1.Ba8?
- threat
- 2.Se6#
- 1...Qxb5+
- 2.Rxb5#
- 1...Qc4
- 2.Rxc4#
- 1...Qg4
- 2.Rc4#
- 1...Rh6
- 2.Ba7#
- 1...Re7
- 2.Bxd6#
- 1...Rc6
- 2.Rxc6#
- 1...Re8
- 2.Rc6#
- 1...Bh3
- 2.Sxe4#
- 1...Rb7!
- threat
- 1.Rxd6?
- threat
- 2.Se6#
- 1...Qxb5+
- 2.Rxb5#
- 1...Ra7+
- 2.Bxa7#
- 1...Bxd6
- 2.Bxd6#
- 1...Qg4
- 2.Rc4#
- 1...Rh6
- 2.Ba7#
- 1...Re8
- 2.Rc6#
- 1...Bh3
- 2.Sxe4#
- 1...Re7!
- threat
- 1.Bc4?
- Keys
- 1.Bb3!
- threat
- 2.Se6#
- 1...Qxb5+
- 2.Rxb5#
- 1...axb3
- 2.Sxb3#
- 1...Qc4
- 2.Rxc4#
- 1...Qg4
- 2.Rc4#
- 1...Rh6
- 2.Ba7#
- 1...Re7
- 2.Bxd6#
- 1...Re8
- 2.Rc6#
- 1...Bh3
- 2.Sxe4#
- threat
- 1.Bb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 20
- Sets
- Q(a);N_GUARD::R1(D)
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);CHECK,OGATE,XP(G)::R1(D),XQ(a)
- Q(a);N_GUARD,XP(C)::R1(D)
- R(g);N_GUARD::B(K)
- R(g);N_GUARD,P_PINR(J)::B(K),XR(g)
- R(g);S_CUTB(i)::B(K),XP(f)
- R(h);N_GUARD::R1(J),XR(h)
- R(h);N_GUARD,XB(K)::R1(J)
- R(h);N_GUARD::R1(J)
- B(b);N_GUARD::S(B),XP(d)
- B(i);N_GUARD::B(K),XP(f)
- B(i);S_CUTR(g)::B(K)
- P(c);N_GUARD::S(B)
- Tries
- Try
- B(H);
- Threat
- S(E)
- Vars
- Q(a);OGATE,XB(H)::R1(D),XQ(a)
- R(g);N_GUARD::B(K)
- R(g);S_CUTB(i)::B(K),XP(f)
- R(h);N_GUARD::R1(J)
- B(b);N_GUARD::S(B),XP(d)
- Refutation
- Q(a);
- Try
- B(H);XP(d)
- Threat
- S(E)
- Vars
- Q(a);CHECK,OGATE,XP(G)::R1(D),XQ(a)
- B(b);XB(H)::S(B),XB(b)
- Q(a);N_GUARD::R1(D),XQ(a)
- R(g);N_GUARD::B(K)
- R(g);S_CUTB(i)::B(K),XP(f)
- R(h);N_GUARD::R1(J)
- Refutation
- B(b);
- Try
- B(H);
- Threat
- S(E)
- Vars
- Q(a);CHECK,OGATE,XP(G)::R1(D),XQ(a)
- R(h);OGATE,XB(H)::R1(J),XR(h)
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);N_GUARD::R1(D)
- R(g);N_GUARD::B(K)
- R(g);S_CUTB(i)::B(K),XP(f)
- B(b);N_GUARD::S(B),XP(d)
- Refutation
- R(h);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE,XP(G)::R1(D),XQ(a)
- R(g);::B(K)
- R(h);N_GUARD::R1(J),XR(h)
- Refutation
- R(g);XB(H)
- Try
- B(H);
- Threat
- S(E)
- Vars
- Q(a);CHECK,OGATE,XP(G)::R1(D),XQ(a)
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);N_GUARD::R1(D)
- R(g);N_GUARD::B(K)
- R(g);S_CUTB(i)::B(K),XP(f)
- R(h);N_GUARD::R1(J),XR(h)
- R(h);N_GUARD::R1(J)
- B(b);N_GUARD::S(B),XP(d)
- Refutation
- R(g);
- Try
- R(J);XP(f)
- Threat
- S(E)
- Vars
- Q(a);CHECK,OGATE,XP(G)::R1(D),XQ(a)
- R(g);CHECK,N_GUARD::B(K),XR(g)
- B(i);OGATE,XR(J)::B(K),XB(i)
- Q(a);N_GUARD::R1(D)
- R(g);N_GUARD::B(K)
- R(h);N_GUARD::R1(J)
- B(b);N_GUARD::S(B),XP(d)
- Refutation
- R(g);
- Try
- Actual
- B(H);
- Threat
- S(E)
- Vars
- Q(a);CHECK,OGATE,XP(G)::R1(D),XQ(a)
- P(c);XB(H)::S(B),XP(c)
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);N_GUARD::R1(D)
- R(g);N_GUARD::B(K)
- R(g);S_CUTB(i)::B(K),XP(f)
- R(h);N_GUARD::R1(J)
- B(b);N_GUARD::S(B),XP(d)
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).