MESON Chess Problem Database
Problem Display
PID: 203044 (8/4p1Q1/RP2P2N/3k4/PB3b1R/2P5/1K1PP1P1/5B2 w - - 0 1)
Zappas, Byron
The Problemist, 1983
#2
14 + 3
SOLUTION
- SOUND
- Sets
- 1...Kc4
- 2.Qd4#
- 2.e4#
- 1...Ke4
- 2.Qd4#
- 1...Kc4
- Tries
- 1.Ra5+?
- 1...Kc4
- 2.Rxf4#
- 2.Rc5#
- 2.Qd4#
- 2.d3#
- 2.e3#
- 2.e4#
- 1...Ke4
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 2.Qg6#
- 2.Qh7#
- 1...Kxe6
- 2.Qxe7#
- 1...Kc6!
- 1...Kc4
- 1.Qd4+?
- 1...Kc6
- 2.Qe4#
- 2.Qd7#
- 1...Kxe6!
- 1...Kc6
- 1.Qg6?
- 1...Kc4
- 2.Qd3#
- 2.Qe4#
- 2.e4#
- 1...Ke5
- 2.Ra5#
- 2.Qf5#
- 1...Kc6
- 2.Qe4#
- 1...Bxd2
- 2.Qe4#
- 1...Bxh6
- 2.Qe4#
- 1...Bh2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bg3
- 2.Qe4#
- 1...Bg5
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 1...Bc7
- 2.Qe4#
- 1...Bb8
- 2.Qe4#
- 1...Be5!
- 1...Kc4
- 1.Qh7?
- 1...Kc4
- 2.Qd3#
- 2.Qe4#
- 2.e4#
- 1...Ke5
- 2.Qf5#
- 1...Kc6
- 2.Qe4#
- 1...Kxe6
- 2.Qf5#
- 1...Bxd2
- 2.Qe4#
- 1...Bxh6
- 2.Qe4#
- 1...Bh2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bg3
- 2.Qe4#
- 1...Bg5
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 1...Bc7
- 2.Qe4#
- 1...Bb8
- 2.Qe4#
- 1...Be5!
- 1...Kc4
- 1.e4+?
- 1...Kxe4
- 2.Qd4#
- 1...Kxe6
- 2.Qxe7#
- 1...Kc6!
- 1...Kxe4
- 1.b7?
- threat
- 2.Qd4#
- 1...Kc4
- 2.Qd4#
- 2.e4#
- 1...Ke4
- 2.Qd4#
- 1...Be5
- 2.e4#
- 1...Be3
- 2.c4#
- 1...Bd6!
- threat
- 1.Ra5+?
- Keys
- 1.Qg4!
- 1...Kc4
- 2.e4#
- 1...Ke4
- 2.Qf5#
- 1...Ke5
- 2.Qf5#
- 1...Kc6
- 2.Qf3#
- 1...Bxd2
- 2.Qe4#
- 1...Bxh6
- 2.Qe4#
- 1...Bh2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bg3
- 2.Qe4#
- 1...Be5
- 2.Qc4#
- 1...Bg5
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 1...Bc7
- 2.Qe4#
- 1...Bb8
- 2.Qe4#
- 1...Kc4
- 1.Qg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 13
- REMOVED MATES = 0
- Sets
- K(b);P_SPINB(a),S_FLIGHT::QAR1(N)
- Tries
- Try
- R(J);CHECK
- Vars
- K(b);S_FLIGHT,XP(L)::QAR1(N),XP(c)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(N);CHECK
- Refutation
- K(b);S_FLIGHT,XP(L)
- Try
- Q(N);
- Vars
- K(b);S_FLIGHT::QAB(N)
- B(a);XP(C)::QAB1(N)
- B(a);XS(M)::QAB1(N)
- B(a);::QAB1(N)
- Refutation
- B(a);P_PINP(F)
- Try
- Q(N);
- Vars
- K(b);P-FLIGHT::QAR1(N)
- K(b);S_FLIGHT::QAB(N)
- K(b);S_FLIGHT,XP(L)::QAB1(N)
- B(a);XP(C)::QAB1(N)
- B(a);XS(M)::QAB1(N)
- B(a);::QAB1(N)
- Refutation
- B(a);P_PINP(F)
- Try
- P(D);CHECK
- Vars
- K(b);P_SPINB(a),S_FLIGHT,XP(D)::QAR1(N)
- K(b);S_FLIGHT,XP(L)::QAR1(N),XP(c)
- Refutation
- K(b);S_FLIGHT
- Try
- P(K);
- Threat
- QAR1(N)
- Vars
- K(b);P_SPINB(a),S_FLIGHT::QAR1(N)
- B(a);P_PINP(F)::P(D)
- B(a);::P(F)
- Refutation
- B(a);
- Try
- Actual
- Q(N);
- Vars
- K(b);P_SPINB(a),S_FLIGHT::B(A)+P(D)
- K(b);P_SPINB(a),S_FLIGHT::QAB1(N)
- K(b);P-FLIGHT::QAR1(N)
- K(b);S_FLIGHT::QAB(N)
- B(a);OGATE,XP(C)::QAB1(N)
- B(a);OGATE,XS(M)::QAB1(N)
- B(a);OGATE::QAB1(N)
- B(a);OGATE,P_PINP(F),SBLOCK::QAB1(N)
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).