MESON Chess Problem Database
Problem Display
PID: 75141 (B6b/R7/1K6/4pp2/p1NkP3/Pp2pb1R/1P1pP2B/2NQ4 w - - 0 1)
Hirschenson, Aaron
Die Schwalbe, 2007
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Kxc4
- 2.Rxa4#
- 1...Kxc4
- Tries
- 1.Sxb3+?
- 1...Kxc4
- 2.Bd5#
- 2.Rxa4#
- 2.Rc7#
- 2.Qc2#
- 1...axb3!
- 1...Kxc4
- 1.Sxd2?
- threat
- 2.Rxa4#
- 2.Rd7#
- 1...Bxe2
- 2.Rd7#
- 1...Bxe4
- 2.Rxa4#
- 1...exd2!
- threat
- 1.Sxe5?
- threat
- 2.Rxa4#
- 2.Rd7#
- 1...Bxe2
- 2.Sxe2#
- 2.Rd7#
- 1...Bxe4
- 2.Rxa4#
- 1...Bxe5
- 2.Rxa4#
- 1...f4!
- threat
- 1.Bxe5+?
- 1...Kxc4
- 2.Bd5#
- 2.Rxa4#
- 2.Rc7#
- 1...Bxe5!
- 1...Kxc4
- 1.Rxa4?
- threat
- 2.Sxb3#
- 2.Sxd2#
- 2.Sa5#
- 2.Sxe5#
- 2.Sd6#
- 1...f4
- 2.Sxb3#
- 2.Sxd2#
- 2.Sa5#
- 2.Sd6#
- 1...Bxe2!
- threat
- 1.Qc2?
- threat
- 2.Rd7#
- 2.Qd3#
- 2.Qc3#
- 1...Bxe2
- 2.Sxe2#
- 2.Rd7#
- 2.Qc3#
- 1...Bxe4
- 2.Qc3#
- 1...dxc1Q
- 2.Rd7#
- 2.Qd3#
- 1...dxc1S
- 2.Rd7#
- 2.Qc3#
- 1...dxc1R
- 2.Rd7#
- 2.Qd3#
- 1...fxe4
- 2.Rd7#
- 2.Qc3#
- 1...d1Q
- 2.Rd7#
- 2.Qc3#
- 1...d1S
- 2.Rd7#
- 2.Qd3#
- 1...d1R
- 2.Rd7#
- 2.Qc3#
- 1...bxc2!
- threat
- 1.Qxb3?
- threat
- 2.Rd7#
- 2.Qc3#
- 2.Qd3#
- 1...Bxe2
- 2.Sxe2#
- 2.Rd7#
- 2.Qc3#
- 1...Bxe4
- 2.Qc3#
- 1...dxc1Q
- 2.Rd7#
- 2.Qd3#
- 1...dxc1S
- 2.Rd7#
- 2.Qc3#
- 1...dxc1R
- 2.Rd7#
- 2.Qd3#
- 1...fxe4
- 2.Rd7#
- 2.Qc3#
- 1...d1Q
- 2.Rd7#
- 2.Qc3#
- 1...d1S
- 2.Rd7#
- 2.Qd3#
- 1...d1R
- 2.Rd7#
- 2.Qc3#
- 1...axb3!
- threat
- 1.Qxd2+?
- 1...Kxc4
- 2.Bd5#
- 2.Rxa4#
- 2.Rc7#
- 2.Qc3#
- 2.Qb4#
- 2.Qd3#
- 2.Qd5#
- 1...exd2!
- 1...Kxc4
- 1.Sxb3+?
- Keys
- 1.Sxe3!
- threat
- 2.Qxd2#
- 1...Kxe3
- 2.Qg1#
- 1...Bxe2
- 2.Rd7#
- 1...Bxe4
- 2.Rxa4#
- threat
- 1.Sxe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- K(f);N_SPINP(a),OGATEB,P-FLIGHT,XS(H)::R(K),XP(e)
- Tries
- Try
- S(A);CHECK,XP(b)
- Refutation
- P(e);XS(A)
- Try
- S(H);XP(a)
- Threat
- DUALS(2)
- Vars
- B(d);XP(D)::R(K)
- B(d);XP(I)::R(K),XP(e)
- Refutation
- P(c);P_SPINP(c),XS(H)
- Try
- S(H);XP(g)
- Threat
- DUALS(2)
- Vars
- B(d);XP(I)::R(K),XP(e)
- B(i);XS(H)::R(K),XP(e)
- Refutation
- P(h);
- Try
- B(E);CHECK,XP(g)
- Refutation
- B(i);XB(E)
- Try
- R(K);XP(e)
- Threat
- DUALS(5)
- Refutation
- B(d);XP(D)
- Try
- Q(B);N_PINP(a)
- Threat
- DUALS(3)
- Vars
- B(d);XP(I)::QAB1(B)
- Refutation
- P(b);XQ(B)
- Try
- Q(B);N_PINP(a),XP(b)
- Threat
- DUALS(3)
- Vars
- B(d);XP(I)::QAB1(B)
- Refutation
- P(e);XQ(B)
- Try
- Q(B);CHECK,XP(a)
- Refutation
- P(c);XQ(B)
- Try
- Actual
- S(H);XP(c)
- Threat
- QAR2(B),XP(a)
- Vars
- K(f);N_SPINP(a),OGATEB,P_SPINB(d),S_FLIGHT,XS(H)::QAB(B)
- B(d);XP(D)::R(K)
- B(d);XP(I)::R(K),XP(e)
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).