MESON Chess Problem Database
Problem Display
PID: 256472 (B4r2/1N3Rp1/2q1P2b/3rnR2/4k3/1QP1B1pK/4P3/5N2 w - - 0 1)
Popa, Nicolae
Sachova skladba, 2021
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Sc5#
- 2.Sd6#
- 1...Qb5
- 2.Sd6#
- 1...Qd7
- 2.Sc5#
- 1...Qe8
- 2.Sc5#
- 2.Sd6#
- 1...Qxc3
- 2.Sd6#
- 1...Qc4
- 2.Sd6#
- 1...Qc5
- 2.Sxc5#
- 1...Qa6
- 2.Sc5#
- 1...Qd6
- 2.Sxd6#
- 1...Qxe6
- 2.Sc5#
- 1...Qc8
- 2.Sd6#
- 1...Rd1
- 2.Sc5#
- 1...Rd2
- 2.Sc5#
- 1...Rd3
- 2.Sc5#
- 1...Rd4
- 2.Sc5#
- 1...Ra5
- 2.Sd6#
- 1...Rb5
- 2.Sd6#
- 1...Rc5
- 2.Sxc5#
- 2.Sd6#
- 1...Rd6
- 2.Sc5#
- 2.Sxd6#
- 1...Rd7
- 2.Sc5#
- 1...Rdd8
- 2.Sc5#
- 1...Bxe3
- 2.Sxg3#
- 1...Bf4
- 2.Rxf4#
- 1...Qa4
- Tries
- 1.Bf2?
- threat
- 2.Sxg3#
- 1...Qxc3
- 2.Sd6#
- 1...Rd3
- 2.Sc5#
- 1...Bf4
- 2.Rxf4#
- 1...g2
- 2.Sg3#
- 1...gxf2!
- threat
- 1.Bd4?
- threat
- 2.Sxg3#
- 1...Rxd4
- 2.Sc5#
- 1...Bf4
- 2.Rxf4#
- 1...g2
- 2.Sg3#
- 1...Qxc3!
- threat
- 1.Bf4?
- threat
- 2.Sxg3#
- 1...Bxf4
- 2.Rxf4#
- 1...Rd3
- 2.Sc5#
- 2.Rxe5#
- 1...g2
- 2.Sg3#
- 1...Qxc3!
- threat
- 1.Bg5?
- threat
- 2.Sxg3#
- 2.Rf4#
- 1...Qxc3
- 2.Rf4#
- 1...Qxe6
- 2.Sxg3#
- 2.Sc5#
- 1...Rxf7
- 2.Sxg3#
- 1...Sxf7
- 2.Sxg3#
- 1...Rd3
- 2.Sc5#
- 2.Rf4#
- 1...Sd3
- 2.Sd2#
- 2.Sxg3#
- 1...Sf3
- 2.Sxg3#
- 1...Sc4
- 2.Sxg3#
- 1...Sg4
- 2.Sxg3#
- 1...Sg6
- 2.Sxg3#
- 1...Sd7
- 2.Sxg3#
- 1...g2
- 2.Sg3#
- 2.Rf4#
- 1...Bxg5!
- threat
- 1.Bb6?
- threat
- 2.Sxg3#
- 1...Qxc3
- 2.Sd6#
- 1...Qc5
- 2.Sxc5#
- 1...Rd3
- 2.Sc5#
- 1...Rd4
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 2.Sd6#
- 1...Bf4
- 2.Rxf4#
- 1...g2
- 2.Sg3#
- 1...Qxb6!
- threat
- 1.Bxh6?
- threat
- 2.Sxg3#
- 2.Rf4#
- 1...Qxc3
- 2.Rf4#
- 1...Qxe6
- 2.Sxg3#
- 2.Sc5#
- 1...Rxf7
- 2.Sxg3#
- 1...Sxf7
- 2.Sxg3#
- 1...gxh6
- 2.Rf4#
- 1...Rd3
- 2.Sc5#
- 2.Rf4#
- 1...Sd3
- 2.Sd2#
- 2.Sxg3#
- 1...Sf3
- 2.Sxg3#
- 1...Sc4
- 2.Sxg3#
- 1...Sg4
- 2.Sxg3#
- 1...Sg6
- 2.Sxg3#
- 1...Sd7
- 2.Sxg3#
- 1...g2
- 2.Sg3#
- 2.Rf4#
- 1...g5!
- threat
- 1.Ba7?
- threat
- 2.Sxg3#
- 1...Qxc3
- 2.Sd6#
- 1...Qc5
- 2.Sxc5#
- 1...Rd3
- 2.Sc5#
- 1...Rd4
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 2.Sd6#
- 1...Bf4
- 2.Rxf4#
- 1...g2
- 2.Sg3#
- 1...Qb6!
- threat
- 1.Rxe5+?
- 1...Rxe5
- 2.Sd6#
- 1...Kxe5!
- 1...Rxe5
- 1.Qa4+?
- 1...Qxa4
- 2.Sc5#
- 2.Sd6#
- 1...Qc4
- 2.Sc5#
- 2.Sd6#
- 1...Rd4
- 2.Qxd4#
- 1...Sc4!
- 1...Qxa4
- 1.Qc4+?
- 1...Qxc4
- 2.Sd6#
- 1...Rd4
- 2.Sc5#
- 2.Sd6#
- 2.Qxd4#
- 1...Sxc4!
- 1...Qxc4
- 1.Qxd5+?
- 1...Qxd5
- 2.Sc5#
- 2.Sd6#
- 1...Kxd5!
- 1...Qxd5
- 1.Qb4+?
- 1...Qc4
- 2.Sc5#
- 2.Sd6#
- 1...Rd4
- 2.Qxd4#
- 1...Sc4!
- 1...Qc4
- 1.c4?
- threat
- 2.Sxg3#
- 1...Bxe3
- 2.Qxe3#
- 1...Rd3
- 2.Sc5#
- 1...Bf4
- 2.Rxf4#
- 1...g2
- 2.Sg3#
- 1...Sd3!
- threat
- 1.Bf2?
- Keys
- 1.Bg1!
- threat
- 2.Sxg3#
- 1...Qxc3
- 2.Sd6#
- 1...Rd3
- 2.Sc5#
- 1...Bf4
- 2.Rxf4#
- 1...g2
- 2.Sg3#
- threat
- 1.Bg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- Q(e);N_GUARD,S_CUTR(c)::S(I)
- Q(e);N_GUARD,S_CUTR(c),XP(D)::S(I)
- Q(e);N_GUARD,S_CUTR(c)::S(I),XQ(e)
- Q(e);N_GUARD,P_PINR(G),S_CUTR(c),XP(H)::S(I)
- R(c);N_GUARD,S_CUTQ(e)::S(I)
- B(f);SBLOCK,XB(E)::S(A),XP(a)
- B(f);N_GUARD::R1(G),XB(f)
- Tries
- Try
- B(E);
- Threat
- S(A),XP(a)
- Vars
- Q(e);N_GUARD,S_CUTR(c),XP(D)::S(I)
- R(c);N_GUARD,S_CUTQ(e)::S(I)
- B(f);N_GUARD::R1(G),XB(f)
- P(a);::S(A)
- Refutation
- P(a);XB(E)
- Try
- B(E);
- Threat
- S(A),XP(a)
- Vars
- R(c);N_GUARD,S_CUTQ(e),XB(E)::S(I)
- B(f);N_GUARD::R1(G),XB(f)
- P(a);::S(A)
- Refutation
- Q(e);XP(D)
- Try
- B(E);
- Threat
- S(A),XP(a)
- Vars
- B(f);OGATE,XB(E)::R1(G),XB(f)
- P(a);::S(A)
- Refutation
- Q(e);XP(D)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(D)::R1(G)
- R(h);XR(J)::S(A),XP(a)
- S(d);XR(J)::S(A),XP(a)
- S(d);::S(A),XP(a)
- Refutation
- B(f);XB(E)
- Try
- B(E);
- Threat
- S(A),XP(a)
- Vars
- Q(e);N_GUARD,S_CUTR(c),XP(D)::S(I)
- Q(e);N_GUARD,S_CUTR(c)::S(I),XQ(e)
- R(c);N_GUARD,S_CUTQ(e)::S(I)
- B(f);N_GUARD::R1(G),XB(f)
- P(a);::S(A)
- Refutation
- Q(e);XB(E)
- Try
- B(E);XB(f)
- Threat
- DUALS(2)
- Vars
- Q(e);XP(D)::R1(G)
- R(h);XR(J)::S(A),XP(a)
- S(d);XR(J)::S(A),XP(a)
- P(g);XB(E)::R1(G)
- S(d);::S(A),XP(a)
- Refutation
- P(g);
- Try
- B(E);
- Threat
- S(A),XP(a)
- Vars
- Q(e);N_GUARD,S_CUTR(c),XP(D)::S(I)
- Q(e);N_GUARD,S_CUTR(c)::S(I),XQ(e)
- R(c);N_GUARD,S_CUTQ(e)::S(I)
- B(f);N_GUARD::R1(G),XB(f)
- P(a);::S(A)
- Refutation
- Q(e);
- Try
- R(G);CHECK,XS(d)
- Vars
- R(c);SBLOCK,XR(G)::S(I)
- Refutation
- K(b);P-FLIGHT,XR(G)
- Try
- Q(C);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR1(C),XR(c)
- Refutation
- S(d);P_SPINS(d)
- Try
- Q(C);CHECK
- Vars
- Q(e);XQ(C)::S(I)
- Refutation
- S(d);XQ(C)
- Try
- Q(C);CHECK,XR(c)
- Refutation
- K(b);P_SPINS(d),S_FLIGHT,XQ(C)
- Try
- Q(C);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR1(C),XR(c)
- Refutation
- S(d);P_SPINS(d)
- Try
- P(D);
- Threat
- S(A),XP(a)
- Vars
- B(f);OGATE,XB(E)::QAR1(C),XB(f)
- R(c);N_GUARD,S_CUTQ(e)::S(I)
- B(f);N_GUARD::R1(G),XB(f)
- P(a);::S(A)
- Refutation
- S(d);
- Try
- Actual
- B(E);
- Threat
- S(A),XP(a)
- Vars
- Q(e);N_GUARD,S_CUTR(c),XP(D)::S(I)
- R(c);N_GUARD,S_CUTQ(e)::S(I)
- B(f);N_GUARD::R1(G),XB(f)
- P(a);::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).