MESON Chess Problem Database
Problem Display
PID: 99551 (8/b1p2q2/3RN3/7p/2KPk1P1/3NB2R/1p2b3/5Q2 w - - 0 1)
Hasenzahl, Karl
Magyar Sakkelet, 1963
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxe6+
- 2.Rxe6#
- 1...Qg6
- 2.Qf4#
- 1...Qe8
- 2.Sg5#
- 2.Qf4#
- 2.Qf5#
- 1...Qg8
- 2.Qf4#
- 2.Qf5#
- 1...Qxf1
- 2.Sg5#
- 1...Qf2
- 2.Sg5#
- 1...Qf4
- 2.Qxf4#
- 1...Qf5
- 2.Qxf5#
- 1...Qd7
- 2.Sg5#
- 2.Qf4#
- 2.Qf5#
- 1...Qe7
- 2.Qf4#
- 2.Qf5#
- 1...Qg7
- 2.Qf4#
- 2.Qf5#
- 1...Qh7
- 2.Sg5#
- 2.Qf4#
- 1...Qf8
- 2.Sg5#
- 1...Bxd3+
- 2.Qxd3#
- 1...Bxd4
- 2.Rxd4#
- 1...Qxe6+
- Tries
- 1.Bg1?
- threat
- 2.Re3#
- 2.Qxe2#
- 1...Qxe6+
- 2.Rxe6#
- 1...Bxd3+
- 2.Qxd3#
- 1...Qxf1
- 2.Sg5#
- 2.Re3#
- 1...Bxf1
- 2.Re3#
- 1...Bxg4
- 2.Re3#
- 1...Bxd4
- 2.Rxd4#
- 1...hxg4
- 2.Re3#
- 1...Qf2
- 2.Sg5#
- 1...Qf3
- 2.Sg5#
- 1...Qf4
- 2.Qxf4#
- 1...Bd1
- 2.Re3#
- 1...Bf3!
- threat
- 1.Bh6?
- threat
- 2.Re3#
- 2.Qxe2#
- 1...Qxe6+
- 2.Rxe6#
- 1...Bxd3+
- 2.Qxd3#
- 1...Qxf1
- 2.Sg5#
- 2.Re3#
- 1...Bxf1
- 2.Re3#
- 1...Bxg4
- 2.Re3#
- 1...Bxd4
- 2.Rxd4#
- 1...hxg4
- 2.Re3#
- 1...Qf2
- 2.Sg5#
- 1...Qf4
- 2.Qxf4#
- 1...Bd1
- 2.Re3#
- 1...Bf3
- 2.Sf2#
- 1...Qf3!
- threat
- 1.Rd5?
- threat
- 2.Sg5#
- 2.Re5#
- 1...Bxd3+
- 2.Qxd3#
- 1...Qxe6
- 2.Qf4#
- 1...Bxd4
- 2.Sg5#
- 2.Rxd4#
- 1...Qf3
- 2.Re5#
- 1...Bf3
- 2.Re5#
- 1...Qg6
- 2.Re5#
- 2.Qf4#
- 1...Qg8
- 2.Re5#
- 2.Qf4#
- 2.Qf5#
- 1...Qf4
- 2.Qxf4#
- 1...Qf5
- 2.Qxf5#
- 1...Qe7
- 2.Re5#
- 2.Qf4#
- 2.Qf5#
- 1...Qg7
- 2.Qf4#
- 2.Qf5#
- 1...Qf6!
- threat
- 1.Qxe2?
- threat
- 2.Bc1#
- 2.Bg1#
- 2.Bd2#
- 2.Bf2#
- 2.Bf4#
- 2.Bg5#
- 2.Bh6#
- 1...Qxe6+
- 2.Rxe6#
- 1...Bxd4
- 2.Bxd4#
- 2.Rxd4#
- 1...Qf3
- 2.Sg5#
- 2.Qxf3#
- 1...Qf1
- 2.Sg5#
- 1...Qf2
- 2.Sxf2#
- 2.Sg5#
- 2.Bxf2#
- 1...Qf4
- 2.Bxf4#
- 1...hxg4!
- threat
- 1.Qxf7?
- threat
- 2.Sg5#
- 2.Qg6#
- 2.Qf4#
- 2.Qf5#
- 2.Qh7#
- 1...Bxg4
- 2.Sf2#
- 2.Sg5#
- 2.Qf4#
- 1...hxg4
- 2.Sg5#
- 2.Qg6#
- 2.Qf4#
- 2.Qh7#
- 1...Bf3
- 2.Qxf3#
- 2.Qf4#
- 1...Bxd3+!
- threat
- 1.Bg1?
- Keys
- 1.Bd2!
- threat
- 2.Re3#
- 2.Qxe2#
- 1...Qxe6+
- 2.Rxe6#
- 1...Bxd3+
- 2.Qxd3#
- 1...Qxf1
- 2.Sg5#
- 2.Re3#
- 1...Bxf1
- 2.Re3#
- 1...Bxg4
- 2.Re3#
- 1...Bxd4
- 2.Rxd4#
- 1...hxg4
- 2.Re3#
- 1...Qf2
- 2.Sg5#
- 1...Qf3
- 2.Sg5#
- 1...Qf4
- 2.Qxf4#
- 1...Bd1
- 2.Re3#
- 1...Bf3
- 2.Sf2#
- threat
- 1.Bd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 4
- Sets
- Q(g);CHECK,OGATE,XS(I)::R(H),XQ(g)
- Q(g);N_GUARD::QAR1(A)
- Q(g);XQ(A)::S(I)
- Q(g);::S(I)
- Q(g);N_GUARD::QAR1(A),XQ(g)
- Q(g);N_GUARD::QAB1(A),XQ(g)
- B(b);CHECK,OGATE,P_PINS(I),XS(B)::QAB1(A),XB(b)
- B(e);OGATE,XP(F)::R1(H),XB(e)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,OGATE,XS(I)::R(H),XQ(g)
- B(b);CHECK,OGATE,P_PINS(I),XS(B)::QAB1(A),XB(b)
- B(b);XQ(A)::R1(D)
- B(b);N_PINS(B),P_PINS(I),XP(G)::R1(D)
- B(e);OGATE,XP(F)::R1(H),XB(e)
- P(d);XP(G)::R1(D)
- Q(g);::S(I)
- Q(g);N_GUARD::QAR1(A),XQ(g)
- B(b);N_PINS(B),P_PINS(I)::R1(D)
- Refutation
- B(b);N_PINS(B),P_PINS(I)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,OGATE,XS(I)::R(H),XQ(g)
- B(b);CHECK,OGATE,P_PINS(I),XS(B)::QAB1(A),XB(b)
- B(b);XQ(A)::R1(D)
- B(b);N_PINS(B),P_PINS(I),XP(G)::R1(D)
- B(e);OGATE,XP(F)::R1(H),XB(e)
- P(d);XP(G)::R1(D)
- Q(g);::S(I)
- Q(g);N_GUARD::QAR1(A),XQ(g)
- B(b);N_PINS(B),P_PINS(I)::R1(D)
- B(b);N_PINS(B),P_PINS(I)::S(B)
- Refutation
- Q(g);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,XS(B)::QAB1(A),XB(b)
- Q(g);N_GUARD,P_PINR(H),XS(I)::QAR1(A)
- Q(g);::R1(H)
- B(b);N_PINS(B)::R1(H)
- Q(g);N_GUARD::QAR1(A),XQ(g)
- Q(g);N_GUARD::QAB1(A),XQ(g)
- Refutation
- Q(g);
- Try
- Q(A);N_SPINS(B),P_SPINS(I),XB(b)
- Threat
- DUALS(7)
- Vars
- Q(g);CHECK,OGATE,XS(I)::R(H),XQ(g)
- Q(g);N_PINS(I)::S(I)
- Q(g);N_PINS(I)::QAR(A)+B(C),XQ(g)
- Refutation
- P(d);XP(G)
- Try
- Q(A);XQ(g)
- Threat
- DUALS(5)
- Refutation
- B(b);CHECK,XS(B)
- Try
- Actual
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,OGATE,XS(I)::R(H),XQ(g)
- B(b);CHECK,OGATE,P_PINS(I),XS(B)::QAB1(A),XB(b)
- B(b);XQ(A)::R1(D)
- B(b);N_PINS(B),P_PINS(I),XP(G)::R1(D)
- B(e);OGATE,XP(F)::R1(H),XB(e)
- P(d);XP(G)::R1(D)
- Q(g);::S(I)
- Q(g);N_GUARD::QAR1(A),XQ(g)
- B(b);N_PINS(B),P_PINS(I)::R1(D)
- B(b);N_PINS(B),P_PINS(I)::S(B)
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).