MESON Chess Problem Database
Problem Display
PID: 252573 (3Q4/6p1/NpPNp3/6R1/2pkP1Kp/2b3n1/1qR1PP1B/1n6 w - - 0 1)
Gross, Erwin
Schach-Aktiv, 1986
#2
11 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Qxb6#
- 1...Qc1
- 2.Qxb6#
- 1...Qa2
- 2.Qxb6#
- 1...Qxc2
- 2.Qxb6#
- 1...Be1
- 2.Rxc4#
- 1...Bd2
- 2.Rxc4#
- 1...Bb4
- 2.Rxc4#
- 1...Ba5
- 2.Rxc4#
- 1...Sf1
- 2.Be5#
- 1...Sh1
- 2.Be5#
- 1...Sxe4
- 2.Sb5#
- 2.Sf5#
- 1...Sh5
- 2.Be5#
- 1...b5
- 2.Qb6#
- 1...Qa1
- Tries
- 1.Kf3?
- threat
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sxe4
- 2.Sxe4#
- 2.Sb5#
- 2.Sf5#
- 1...Qa3
- 2.Sb5#
- 1...Qb4
- 2.Sb5#
- 1...Qb5
- 2.Sxb5#
- 1...Bb4
- 2.Sb5#
- 2.Rxc4#
- 1...Sf5
- 2.Sb5#
- 2.Sxf5#
- 1...b5
- 2.Sxb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qb6#
- 1...Sd2+!
- threat
- 1.Sb4?
- threat
- 2.Qxb6#
- 2.e3#
- 1...Bxb4
- 2.Rxc4#
- 1...Sxe2
- 2.Qxb6#
- 1...Sxe4
- 2.Sb5#
- 2.e3#
- 1...Sf5
- 2.Qxb6#
- 1...e5
- 2.Qxb6#
- 1...Qc1
- 2.Qxb6#
- 1...Bd2
- 2.Rxc4#
- 2.Qxb6#
- 1...Sf1
- 2.Qxb6#
- 1...b5
- 2.Qb6#
- 2.e3#
- 1...Qxb4!
- threat
- 1.Sc5?
- threat
- 2.Sxe6#
- 2.Sb5#
- 2.Sdb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.e3#
- 1...Sxe2
- 2.Sb5#
- 2.Sdb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sxe4
- 2.Sxe6#
- 2.Sdxe4#
- 2.Sb5#
- 2.e3#
- 1...Sf5
- 2.Sxe6#
- 1...e5
- 2.Se6#
- 2.Sdb7#
- 1...Qc1
- 2.Sxe6#
- 2.Sb5#
- 2.Sdb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qb5
- 2.Sxe6#
- 2.Sxb5#
- 2.Sdb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.e3#
- 1...Bd2
- 2.Sxe6#
- 2.Sxc4#
- 2.Sb5#
- 2.Sdb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rxc4#
- 1...Sf1
- 2.Sxe6#
- 2.Sb5#
- 2.Sdb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...b5
- 2.Sxe6#
- 2.Sxb5#
- 2.Sdb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.e3#
- 1...bxc5!
- threat
- 1.Sc7?
- threat
- 2.Sxe6#
- 1...e5
- 2.Se6#
- 1...Sxe2!
- threat
- 1.Sxc4+?
- 1...Kxe4
- 2.Qd3#
- 2.f3#
- 1...Kxc4!
- 1...Kxe4
- 1.Sf5+?
- 1...Ke5
- 2.Sxg3#
- 1...Kxe4!
- 1...Ke5
- 1.Qf6+?
- 1...e5
- 2.Qxe5#
- 1...gxf6!
- 1...e5
- 1.Kf3?
- Keys
- 1.f3!
- threat
- 2.Bg1#
- 1...Ke3
- 2.Bg1#
- 1...Sxe2
- 2.Sf5#
- 1...Sxe4
- 2.Sf5#
- 1...Qc1
- 2.Qxb6#
- 1...Be1
- 2.Sxc4#
- 1...Bd2
- 2.Sxc4#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- threat
- 1.f3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD::QAB(K),XP(h)
- Q(b);N_GUARD,XR(A)::QAB(K),XP(h)
- B(c);OGATE::R1(A),XP(e)
- S(d);OGATE::B(D)
- P(h);S_CUTQ(b)::QAB(K)
- Tries
- Try
- K(F);S_FLIGHT
- Threat
- DUALS(5)
- Vars
- Q(b);::QAR(K)+S(J),DCHECK
- Q(b);::QAR(K)+S(J),DCHECK,XQ(b)
- Refutation
- S(a);CHECK
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- B(c);OGATE,XS(H)::R1(A),XP(e)
- S(d);XP(B)::QAB(K),XP(h)
- S(d);::QAB(K),XP(h)
- P(i);::QAB(K),XP(h)
- Q(b);::QAB(K),XP(h)
- Refutation
- Q(b);XS(H)
- Try
- S(H);
- Threat
- DUALS(7)
- Vars
- S(d);::S(H),XP(i)
- Refutation
- P(h);XS(H)
- Try
- S(H);
- Threat
- S(H),XP(i)
- Vars
- P(i);::S(H)
- Refutation
- S(d);XP(B)
- Try
- S(J);CHECK,XP(e)
- Refutation
- K(f);P-FLIGHT,P_SPINB(c),XS(J)
- Try
- S(J);CHECK
- Vars
- K(f);P_SPINS(d),S_FLIGHT::R(G)+S(J),XS(d)
- Refutation
- K(f);P-FLIGHT,XP(E)
- Try
- Q(K);CHECK
- Vars
- P(i);P_SPINP(i)::QAB1(K),XP(i)
- Refutation
- P(j);XQ(K)
- Try
- Actual
- P(C);
- Threat
- B(D)
- Vars
- K(f);S_FLIGHT::B(D)
- S(d);XP(B)::QAR(K)+S(J),DCHECK
- S(d);XP(E)::QAR(K)+S(J),DCHECK
- Q(b);N_GUARD::QAB(K),XP(h)
- B(c);::QAR(K)+S(J),XP(e)
- S(d);::QAR(K)+S(J),DCHECK
- S(d);::QAR(K)+S(J),DCHECK,XS(d)
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).