MESON Chess Problem Database
Problem Display
PID: 71681 (K4n1B/1BR1Q1q1/1p2p3/p3b2b/3k4/2p5/r3P1Nn/1N3R2 w - - 0 1)
Kapros, Jorge Marcelo
Problem Observer, 2006
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Qh6
- 2.Qd6#
- 1...Qg3
- 2.Qd6#
- 1...Qg4
- 2.Qd6#
- 1...Qg5
- 2.Qd6#
- 1...Qg6
- 2.Qd6#
- 1...Qxe7
- 2.Rf4#
- 1...Qf7
- 2.Qd6#
- 1...Qh7
- 2.Qd6#
- 1...Qg8
- 2.Rf4#
- 2.Qd6#
- 1...Ra1
- 2.Rd1#
- 1...Ra3
- 2.Rd1#
- 1...Ra4
- 2.Rd1#
- 1...Bd6
- 2.Qxd6#
- 1...Bf6
- 2.Qd6#
- 1...a4
- 2.Qb4#
- 1...b5
- 2.Qc5#
- 1...Qh6
- Tries
- 1.Bxg7?
- threat
- 2.Rf4#
- 2.Qd6#
- 1...Rxe2
- 2.Qd6#
- 1...Bxg7
- 2.Qd6#
- 1...Bxe2
- 2.Qd6#
- 1...Sxf1
- 2.Qd6#
- 1...Bf6
- 2.Qd6#
- 1...Bg6
- 2.Qd6#
- 1...Sf3
- 2.Qd6#
- 1...Sg6
- 2.Qd6#
- 2.Qd8#
- 2.Qd7#
- 1...Bf3!
- threat
- 1.Qh4+?
- 1...Qg4
- 2.Qf2#
- 1...Bf4
- 2.Qxf4#
- 1...Bg4
- 2.Qf2#
- 1...Sg4!
- 1...Qg4
- 1.Qd8+?
- 1...Qd7
- 2.Rf4#
- 1...Bd6
- 2.Qxd6#
- 1...Sd7!
- 1...Qd7
- 1.Qxe6?
- threat
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 2.Qxb6#
- 1...Qxg2
- 2.Qxe5#
- 2.Qxb6#
- 1...Qxc7
- 2.Qd5#
- 1...Rxe2
- 2.Qc4#
- 2.Qd5#
- 1...Bxc7
- 2.Qd5#
- 1...Bxe2
- 2.Qd5#
- 1...Qf6
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Qh6
- 2.Bxe5#
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Qg6
- 2.Bxe5#
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 2.Qxe5#
- 1...Qd7
- 2.Bxe5#
- 2.Rf4#
- 2.Rc4#
- 2.Qc4#
- 2.Qxe5#
- 2.Qxb6#
- 1...Qe7
- 2.Bxe5#
- 2.Rf4#
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Qf7
- 2.Bxe5#
- 2.Rc4#
- 2.Qxe5#
- 2.Qxb6#
- 1...Qg8
- 2.Bxe5#
- 2.Rf4#
- 2.Rc4#
- 2.Qxe5#
- 2.Qxb6#
- 1...Rb2
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Ra4
- 2.Rd1#
- 2.Qd5#
- 2.Qxb6#
- 1...Bg3
- 2.Rc4#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 1...Bf4
- 2.Rxf4#
- 2.Rc4#
- 2.Qd5#
- 2.Qe4#
- 1...Bd6
- 2.Rc4#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 2.Qxd6#
- 1...Bf6
- 2.Rf4#
- 2.Rc4#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 2.Qd6#
- 1...Bf3
- 2.Rc4#
- 2.Qc4#
- 2.Qxb6#
- 1...Bf7
- 2.Rc4#
- 2.Qxb6#
- 1...Sd7
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...b5
- 2.Qd5#
- 2.Qb6#
- 1...Sxe6!
- threat
- 1.Qd7+?
- 1...Qxd7
- 2.Rf4#
- 1...Bd6
- 2.Qxd6#
- 1...Sxd7!
- 1...Qxd7
- 1.Bxg7?
- Keys
- 1.Qa3!
- threat
- 2.Qxc3#
- 1...Qxc7
- 2.Rf4#
- 1...Rxa3
- 2.Rd1#
- 1...Qg3
- 2.Qd6#
- 1...Rc2
- 2.Qa4#
- 1...c2
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 2.e3#
- threat
- 1.Qa3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- Q(j);P_SPINB(f)::QAR2(G)
- Q(j);P_SPINB(f),XQ(G)::R(B)
- R(a);N_GUARD::R(B)
- B(f);N_GUARD,P_SPINQ(j)::QAR2(G),XB(f)
- B(f);N_GUARD::QAR2(G)
- P(e);N_GUARD::QAR2(G)
- P(h);N_GUARD::QAB1(G)
- Tries
- Try
- B(I);P_PINB(f),XQ(j)
- Threat
- DUALS(2)
- Vars
- R(a);XP(C)::QAR2(G)
- B(f);N_SPINB(f),XB(I)::QAR2(G)
- B(g);XP(C)::QAR2(G)
- S(b);XR(B)::QAR2(G)
- B(f);::QAR2(G)
- B(g);::QAR2(G)
- S(b);::QAR2(G)
- Refutation
- B(g);P_PINB(E)
- Try
- Q(G);CHECK
- Vars
- Q(j);P_SPINB(f),P_SPINQ(j)::QAB(G)
- B(f);N_GUARD,P_SPINB(f),P_SPINQ(j)::QAR2(G),XB(f)
- B(g);P_SPINB(g)::QAB(G)
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(G);CHECK
- Vars
- Q(j);P_SPINB(f),P_SPINQ(j)::R(B)
- B(f);N_GUARD,P_SPINB(f),P_SPINQ(j)::QAR2(G),XB(f)
- Refutation
- S(k);P_SPINS(k)
- Try
- Q(G);XP(i)
- Threat
- DUALS(4)
- Vars
- Q(j);P_SPINB(f),XR(F)::QAR1(G)
- B(f);P_SPINQ(j),XR(F)::QAR1(G)
- B(g);XP(C)::QAR1(G)
- Refutation
- S(k);XQ(G)
- Try
- Q(G);CHECK
- Vars
- Q(j);P_SPINB(f),XQ(G)::R(B)
- B(f);N_GUARD,P_SPINB(f),P_SPINQ(j)::QAR2(G),XB(f)
- Refutation
- S(k);XQ(G)
- Try
- Actual
- Q(G);
- Threat
- QAB1(G),XP(c)
- Vars
- Q(j);P_SPINB(f),XR(F)::R(B)
- R(a);N_GUARD,XQ(G)::R(B)
- Q(j);P_SPINB(f)::QAR2(G)
- R(a);N_GUARD::QAR(G)
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).