MESON Chess Problem Database
Problem Display
PID: 76727 (5N2/4B3/7n/p3pk2/R4ppp/4p1RQ/4K3/8 w - - 0 1)
Maas, Johann H
Probleme-Supplement, 1969
#2
6 + 8
SOLUTION
- SOUND
- Sets
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...fxg3
- 2.Qf1#
- 1...f3+
- 2.Rxf3#
- 1...gxh3
- 2.Rg5#
- 1...hxg3
- 2.Qh5#
- 1...e4
- 2.Rxa5#
- 1...Sf7
- Tries
- 1.Kd1?
- 1...fxg3
- 2.Qf1#
- 1...gxh3
- 2.Rg5#
- 1...hxg3
- 2.Qh5#
- 1...e4
- 2.Rxa5#
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...f3
- 2.Rxf3#
- 1...e2+!
- 1...fxg3
- 1.Ke1?
- 1...fxg3
- 2.Qf1#
- 1...gxh3
- 2.Rg5#
- 1...hxg3
- 2.Qh5#
- 1...e4
- 2.Rxa5#
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...f3
- 2.Rxf3#
- 1...e2!
- 1...fxg3
- 1.Bxh4?
- 1...f3+
- 2.Rxf3#
- 1...fxg3
- 2.Qf1#
- 1...e4
- 2.Rxa5#
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...gxh3!
- 1...f3+
- 1.Rg1?
- 1...gxh3
- 2.Rg5#
- 1...e4
- 2.Rxa5#
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...f3+!
- 1...gxh3
- 1.Rg2?
- 1...gxh3
- 2.Rg5#
- 1...e4
- 2.Rxa5#
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...f3+!
- 1...gxh3
- 1.Rxg4?
- threat
- 2.Rgxf4#
- 2.Rg5#
- 1...f3+
- 2.Qxf3#
- 1...e4
- 2.Rxa5#
- 2.Rg5#
- 1...Sxg4!
- threat
- 1.Rc4?
- 1...f3+
- 2.Rxf3#
- 1...fxg3
- 2.Qf1#
- 1...gxh3
- 2.Rg5#
- 1...hxg3
- 2.Qh5#
- 1...e4
- 2.Rc5#
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...a4!
- 1...f3+
- 1.Qg2?
- threat
- 2.Qe4#
- 1...e4
- 2.Rxa5#
- 2.Qxe4#
- 1...f3+!
- threat
- 1.Qh1?
- threat
- 2.Qe4#
- 1...e4
- 2.Rxa5#
- 2.Qxe4#
- 1...f3+!
- threat
- 1.Qxh4?
- threat
- 2.Qg5#
- 2.Qf6#
- 2.Qh5#
- 1...Sf7
- 2.Qf6#
- 2.Qxg4#
- 2.Qh7#
- 1...Sg8
- 2.Qg5#
- 2.Qxg4#
- 2.Qh5#
- 2.Qh7#
- 1...f3+!
- threat
- 1.Kd1?
- Keys
- 1.Bd8!
- 1...f3+
- 2.Rxf3#
- 1...fxg3
- 2.Qf1#
- 1...gxh3
- 2.Rg5#
- 1...hxg3
- 2.Qh5#
- 1...e4
- 2.Rxa5#
- 1...Sf7
- 2.Qxg4#
- 1...Sg8
- 2.Qxg4#
- 1...f3+
- 1.Bd8!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(h);N_GUARD::QAB1(C),XP(c)
- P(b);OGATEB,XR(B)::QAR(C)
- P(b);CHECK,OGATEB::R(B),XP(b)
- P(c);N_SPINP(c),OGATE,XQ(C)::R1(B)
- P(d);OGATE,XR(B)::QAR2(C)
- P(f);OGATEB,SBLOCK::R(D),XP(e)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- P(b);OGATEB,XR(B)::QAR(C)
- P(c);N_SPINP(c),OGATE,XQ(C)::R1(B)
- P(d);OGATE,XR(B)::QAR2(C)
- P(f);OGATEB,SBLOCK::R(D),XP(e)
- S(h);N_GUARD::QAB1(C),XP(c)
- P(b);OGATEB::R(B),XP(b)
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- P(b);OGATEB,XR(B)::QAR(C)
- P(c);N_SPINP(c),OGATE,XQ(C)::R1(B)
- P(d);OGATE,XR(B)::QAR2(C)
- P(f);OGATEB,SBLOCK::R(D),XP(e)
- S(h);N_GUARD::QAB1(C),XP(c)
- P(b);OGATEB::R(B),XP(b)
- Refutation
- P(a);
- Try
- B(E);XP(d)
- Vars
- P(b);CHECK,OGATEB::R(B),XP(b)
- P(b);OGATEB,XR(B)::QAR(C)
- P(f);OGATEB,SBLOCK::R(D),XP(e)
- S(h);N_GUARD::QAB1(C),XP(c)
- Refutation
- P(c);N_SPINP(c),XQ(C)
- Try
- R(B);
- Vars
- P(c);N_SPINP(c),OGATE,XQ(C)::R1(B)
- P(f);OGATEB,SBLOCK::R(D),XP(e)
- S(h);N_GUARD::QAB1(C),XP(c)
- Refutation
- P(b);CHECK
- Try
- R(B);
- Vars
- P(c);N_SPINP(c),OGATE,XQ(C)::R1(B)
- P(f);OGATEB,SBLOCK::R(D),XP(e)
- S(h);N_GUARD::QAB1(C),XP(c)
- Refutation
- P(b);CHECK
- Try
- R(B);XP(c)
- Threat
- DUALS(2)
- Vars
- P(b);CHECK,OGATEB::QAR2(C),XP(b)
- Refutation
- S(h);P_SPINS(h),XR(B)
- Try
- R(D);
- Vars
- P(b);CHECK,OGATEB::R(B),XP(b)
- P(b);OGATEB,XR(B)::QAR(C)
- P(c);N_SPINP(c),OGATE,XQ(C)::R1(B)
- P(d);OGATE,XR(B)::QAR2(C)
- P(f);OGATEB,SBLOCK::R(D)
- S(h);N_GUARD::QAB1(C),XP(c)
- Refutation
- P(e);
- Try
- Q(C);N_PINP(c)
- Threat
- QAB1(C)
- Refutation
- P(b);CHECK
- Try
- Q(C);N_PINP(c)
- Threat
- QAB1(C)
- Refutation
- P(b);CHECK
- Try
- Q(C);N_PINP(c),XP(d)
- Threat
- DUALS(3)
- Refutation
- P(b);CHECK
- Try
- Actual
- B(E);
- Vars
- P(b);CHECK,OGATEB::R(B),XP(b)
- P(b);OGATEB,XR(B)::QAR(C)
- P(c);N_SPINP(c),OGATE,XQ(C)::R1(B)
- P(d);OGATE,XR(B)::QAR2(C)
- P(f);OGATEB,SBLOCK::R(D),XP(e)
- S(h);N_GUARD::QAB1(C),XP(c)
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).