MESON Chess Problem Database
Problem Display
PID: 261273 (1N5Q/8/K2Bkqpn/4bR2/R1N3P1/PB2P3/8/8 w - - 0 1)
List, Reto
Neue Zurcher Zeitung, 1981
#2
11 + 5
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kf7
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sxe5#
- 2.Sb6#
- 1...Qh4
- 2.Qxe5#
- 1...Qg5
- 2.Qxe5#
- 1...Qe7
- 2.Qxe5#
- 1...Qd8
- 2.Qxe5#
- 1...Qf7
- 2.Rxe5#
- 2.Qxe5#
- 1...Qf8
- 2.Qxe5#
- 1...Bh2
- 2.Qxf6#
- 1...Bg3
- 2.Qxf6#
- 1...Bf4
- 2.Qxf6#
- 1...Bxd6
- 2.Qxf6#
- 1...Kf7
- Tries
- 1.Bb4?
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sxe5#
- 2.Sb6#
- 1...Kd5+
- 2.Sd6#
- 1...Kf7+
- 2.Sb6#
- 1...Bxb8
- 2.Se5#
- 2.Sb6#
- 1...Sxf5
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sb6#
- 1...gxf5
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sb6#
- 1...Qd8
- 2.Qxe5#
- 1...Ba1
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 1...Bb2
- 2.Sxb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 1...Bh2
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Qxf6#
- 1...Bc3
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 1...Bg3
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Qxf6#
- 1...Bd4
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 1...Bf4
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Qxf6#
- 1...Bd6
- 2.Qxf6#
- 1...Bc7
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Qxf6#
- 1...Sxg4!
- threat
- 1.Rxe5+?
- 1...Kf7
- 2.Qf8#
- 1...Qxe5!
- 1...Kf7
- 1.Rxf6+?
- 1...Kd5
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sxe5#
- 2.Sb6#
- 1...Bxf6!
- 1...Kd5
- 1.Qxf6+?
- 1...Kd5
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sxe5#
- 2.Sb6#
- 2.Rxe5#
- 2.Qxe5#
- 1...Bxf6!
- 1...Kd5
- 1.Bb4?
- Keys
- 1.Bf8!
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sxe5#
- 2.Sb6#
- 2.Sd6#
- 1...Kd5+
- 2.Sb6#
- 1...Kf7+
- 2.Sd6#
- 1...Qxf8
- 2.Qxe5#
- 1...Bxb8
- 2.Se5#
- 2.Sb6#
- 1...Sxg4
- 2.Sd6#
- 1...Sxf5
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...gxf5
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Qe7
- 2.Qxe5#
- 1...Qd8
- 2.Sd6#
- 2.Qxe5#
- 1...Ba1
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Bb2
- 2.Sxb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Bh2
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 2.Qxf6#
- 1...Bc3
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Bg3
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 2.Qxf6#
- 1...Bd4
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Bf4
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 2.Qxf6#
- 1...Bd6
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sxd6#
- 2.Qxf6#
- 1...Bc7
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 2.Qxf6#
- threat
- 1.Bf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(c);OGATE::QAR1(K),XB(a)
- B(a);N_GUARD::QAR1(K),XQ(c)
- B(a);N_GUARD,XB(I)::QAR1(K),XQ(c)
- Tries
- Try
- B(I);
- Threat
- DUALS(5)
- Vars
- K(b);CHECK,N_GUARD,P_SPINB(a),S_FLIGHT::B(B)+S(E)
- K(b);CHECK,P_SPINQ(c),S_FLIGHT::B(B)+S(E)
- Q(c);OGATE::QAR1(K),XB(a)
- B(a);N_GUARD::QAR1(K),XQ(c)
- Refutation
- S(e);XP(F)
- Try
- R(G);CHECK,XB(a)
- Vars
- K(b);P_PINB(I),S_CUTQ(c),S_FLIGHT::QAR1(K)
- Refutation
- Q(c);XR(G)
- Try
- R(G);CHECK,XQ(c)
- Refutation
- B(a);XR(G)
- Try
- Q(K);CHECK,XQ(c)
- Refutation
- B(a);XQ(K)
- Try
- Actual
- B(I);
- Threat
- DUALS(6)
- Vars
- K(b);CHECK,P_SPINB(a),S_FLIGHT::B(B)+S(E),DCHECK
- K(b);CHECK,P_SPINQ(c),S_FLIGHT::B(B)+S(E),DCHECK
- Q(c);OGATE,XB(I)::QAR1(K),XB(a)
- S(e);XP(F)::B(B)+S(E)
- Q(c);OGATE::QAR1(K),XB(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).