MESON Chess Problem Database
Problem Display
PID: 70667 (2R5/1N6/1p2P1N1/2p2PQp/3pk2p/1BP3bR/3B2P1/3K4 w - - 0 1)
Valuska, Jan
Comm., Die Schwalbe, 1970
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Sd6#
- 2.Qf4#
- 1...Bf2
- 2.Sd6#
- 2.Qf4#
- 1...Bf4
- 2.Qxf4#
- 1...Bd6
- 2.Sxd6#
- 1...b5
- 2.Sxc5#
- 1...Be1
- Tries
- 1.Sd6+?
- 1...Kd3
- 2.Sf4#
- 2.Se5#
- 2.Bc2#
- 2.Bc4#
- 1...Bxd6!
- 1...Kd3
- 1.Bd5+?
- 1...Kd3
- 2.Sf4#
- 2.Se5#
- 1...Kxd5!
- 1...Kd3
- 1.Rxc5?
- 1...Kd3
- 2.Bc2#
- 1...dxc3
- 2.Qe3#
- 1...bxc5
- 2.Sxc5#
- 1...Be1
- 2.Sd6#
- 2.Bd5#
- 2.Re5#
- 2.Qf4#
- 1...Bf2
- 2.Sd6#
- 2.Bd5#
- 2.Re5#
- 2.Qf4#
- 1...Bh2
- 2.Bd5#
- 1...Bf4
- 2.Bd5#
- 2.Qxf4#
- 1...Be5
- 2.Bd5#
- 2.Rxe5#
- 1...Bd6
- 2.Sxd6#
- 2.Bd5#
- 1...Bc7
- 2.Bd5#
- 1...Bb8
- 2.Bd5#
- 1...d3
- 2.Bd5#
- 2.Qe3#
- 1...b5!
- 1...Kd3
- 1.Qf4+?
- 1...Kd3
- 2.Se5#
- 2.Qf3#
- 1...Bxf4!
- 1...Kd3
- 1.Qxh4+?
- 1...Kd3
- 2.Se5#
- 2.Rxg3#
- 1...Bf4
- 2.Sd6#
- 2.Qxf4#
- 1...Bxh4
- 2.Sd6#
- 1...Kxf5!
- 1...Kd3
- 1.Qg4+?
- 1...Kd3
- 2.Se5#
- 2.Qe2#
- 2.Qf3#
- 1...Bf4
- 2.Sd6#
- 2.Qxf4#
- 1...hxg4!
- 1...Kd3
- 1.f6?
- 1...Kd3
- 2.Qf5#
- 1...dxc3
- 2.Qd5#
- 1...Bh2
- 2.Bd5#
- 2.Qd5#
- 1...Be1
- 2.Sd6#
- 2.Bd5#
- 2.Qf4#
- 2.Qd5#
- 2.Qe5#
- 1...Bf2
- 2.Sd6#
- 2.Bd5#
- 2.Qf4#
- 2.Qd5#
- 2.Qe5#
- 1...Bf4
- 2.Bd5#
- 2.Qxf4#
- 2.Qd5#
- 1...Be5
- 2.Qxe5#
- 1...Bd6
- 2.Sxd6#
- 2.Bd5#
- 2.Qd5#
- 1...Bc7
- 2.Bd5#
- 2.Qd5#
- 1...Bb8
- 2.Bd5#
- 2.Qd5#
- 1...d3
- 2.Bd5#
- 2.Qd5#
- 1...b5
- 2.Sxc5#
- 1...c4!
- 1...Kd3
- 1.Sd6+?
- Keys
- 1.Rd8!
- 1...Kd3
- 2.Qe3#
- 1...dxc3
- 2.Bc2#
- 1...Be1
- 2.Sd6#
- 2.Bd5#
- 2.Qf4#
- 1...Bf2
- 2.Sd6#
- 2.Bd5#
- 2.Qf4#
- 1...Bh2
- 2.Bd5#
- 1...Bf4
- 2.Bd5#
- 2.Qxf4#
- 1...Be5
- 2.Bd5#
- 1...Bd6
- 2.Sxd6#
- 1...Bc7
- 2.Bd5#
- 1...Bb8
- 2.Bd5#
- 1...d3
- 2.Bd5#
- 1...c4
- 2.Rxd4#
- 1...b5
- 2.Sxc5#
- 1...Kd3
- 1.Rd8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- B(a);N_GUARD::QAR1(H),XB(a)
- B(a);N_GUARD::S(K),XB(a)
- P(g);N_GUARD::S(K),XP(e)
- Tries
- Try
- S(K);CHECK
- Refutation
- B(a);XS(K)
- Try
- B(D);CHECK
- Refutation
- K(c);S_FLIGHT,XB(D)
- Try
- R(L);XP(e)
- Vars
- K(c);P_SPINB(a),S_FLIGHT::B(D)
- P(b);N_GUARD,XP(E)::QAR1(H)
- P(g);XR(L)::S(K),XP(g)
- B(a);::B(D)
- Refutation
- P(g);
- Try
- Q(H);CHECK
- Refutation
- B(a);XQ(H)
- Try
- Q(H);CHECK,XP(d)
- Vars
- B(a);XQ(H)::S(K)
- Refutation
- K(c);S_FLIGHT,XP(G)
- Try
- Q(H);CHECK
- Refutation
- P(f);XQ(H)
- Try
- P(G);
- Vars
- K(c);P_SPINB(a),S_FLIGHT::QAB(H)
- P(b);XP(E)::QAB1(H)
- B(a);N_GUARD::QAR1(H),XB(a)
- P(g);N_GUARD::S(K),XP(e)
- Refutation
- P(e);
- Try
- Actual
- R(L);
- Vars
- K(c);P_SPINB(a),P_SPINP(b),S_FLIGHT::QAR1(H)
- P(b);N_GUARD,XP(E)::B(D)
- B(a);::B(D)
- B(a);N_GUARD::S(K),XB(a)
- P(b);SBLOCK::B(D)
- P(e);N_GUARD::R1(L),XP(b)
- P(g);N_GUARD::S(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).