MESON Chess Problem Database
Problem Display
PID: 265898 (Q6B/3pKN2/1pp5/3k1N2/1PR4R/3P1p2/2n2q2/8 w - - 0 1)
Laib, Kurt Friedrich
Die Schwalbe, 1972
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.Rcd4#
- 2.Rhd4#
- 1...d6
- 2.Qxc6#
- 1...Se3
- Tries
- 1.Kxd7?
- threat
- 2.Se7#
- 2.Qxc6#
- 1...Qxh4
- 2.Qxc6#
- 1...Sxb4
- 2.Se7#
- 1...Qe1
- 2.Qxc6#
- 1...Qe3
- 2.Qxc6#
- 1...Qe2
- 2.Qxc6#
- 1...Sd4
- 2.Se7#
- 1...Qc5!
- threat
- 1.Se3+?
- 1...Sxe3
- 2.Rcd4#
- 2.Rhd4#
- 1...Qxe3+!
- 1...Sxe3
- 1.Rxc6?
- threat
- 2.Rxc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rch6#
- 2.Rc7#
- 2.Rc8#
- 1...Qe1+
- 2.Re6#
- 1...Qe3+
- 2.Re6#
- 1...Qxh4+
- 2.Rf6#
- 1...Qc5+
- 2.Rxc5#
- 2.Rd6#
- 1...Qe2+
- 2.Re6#
- 1...dxc6
- 2.Qa2#
- 2.Qd8#
- 1...Sa1
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rch6#
- 2.Rc7#
- 2.Rc8#
- 1...Se1
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rch6#
- 2.Rc7#
- 2.Rc8#
- 1...Sa3
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rch6#
- 2.Rc7#
- 2.Rc8#
- 1...Se3
- 2.Rd4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rch6#
- 2.Rc7#
- 2.Rc8#
- 1...Sd4
- 2.Rc5#
- 2.Rd6#
- 1...b5
- 2.Rxc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rch6#
- 2.Rc7#
- 2.Rc8#
- 1...d6
- 2.Rxc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxb6#
- 2.Rxd6#
- 2.Rc7#
- 2.Rc8#
- 1...Sxb4!
- threat
- 1.Qa2?
- threat
- 2.Rxc2#
- 2.Rc3#
- 2.Rcd4#
- 2.Rce4#
- 2.Rcf4#
- 2.Rcg4#
- 2.Rc5#
- 1...Qe1+
- 2.Rce4#
- 1...Qe3+
- 2.Rce4#
- 1...Qxh4+
- 2.Rxh4#
- 1...Qc5+
- 2.Rxc5#
- 1...Qe2+
- 2.Rce4#
- 1...c5
- 2.Rxc5#
- 2.Qa8#
- 1...Qd4
- 2.Rcxd4#
- 2.Rc5#
- 1...Sa1
- 2.Rcd4#
- 2.Rc5#
- 1...Se1
- 2.Rc2#
- 2.Rcd4#
- 2.Rc5#
- 1...Sa3
- 2.Rcd4#
- 2.Rc5#
- 1...Se3
- 2.Rcd4#
- 2.Rc5#
- 2.Rhd4#
- 1...Sd4
- 2.Rcxd4#
- 2.Rc5#
- 1...Sxb4!
- threat
- 1.Qg8?
- threat
- 2.Se5#
- 2.Sg5#
- 2.S7d6#
- 2.S7h6#
- 2.Sd8#
- 1...Qe1+
- 2.Se5#
- 1...Qe3+
- 2.Se5#
- 1...Qxh4+
- 2.Sg5#
- 1...Qc5+
- 2.S7d6#
- 1...Qe2+
- 2.Se5#
- 1...c5
- 2.Se5#
- 2.Sd8#
- 2.Qa8#
- 1...Qg1
- 2.Sg5#
- 1...Qg3
- 2.Sg5#
- 1...Qg2
- 2.Sg5#
- 1...d6
- 2.Se5#
- 2.Sg5#
- 2.S7xd6#
- 2.S7h6#
- 2.Sd8#
- 1...Sd4!
- threat
- 1.Kxd7?
- Keys
- 1.Rh5!
- threat
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.S5d6#
- 2.S5h6#
- 2.Sg7#
- 1...Qe1+
- 2.Se3#
- 1...Qe3+
- 2.Sxe3#
- 1...Qh4+
- 2.Sxh4#
- 1...Qc5+
- 2.S5d6#
- 1...Qe2+
- 2.Se3#
- 1...Qg1
- 2.Se3#
- 2.Sg3#
- 1...Qg3
- 2.Se3#
- 2.Sxg3#
- 1...Qd4
- 2.Se3#
- 2.Sxd4#
- 1...Qd2
- 2.Se3#
- 1...Qg2
- 2.Se3#
- 2.Sg3#
- 1...Qh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 2.Rd4#
- 1...Sd4
- 2.Se3#
- 2.Sxd4#
- 1...d6
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.S5xd6#
- 2.S5h6#
- 2.Sg7#
- 2.Qxc6#
- threat
- 1.Rh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- P(g);N_GUARD::QAB1(H),XP(f)
- Tries
- Try
- K(F);P-FLIGHT,XP(g)
- Threat
- DUALS(2)
- Vars
- Q(b);XR(D)::QAB1(H),XP(f)
- S(a);XP(B)::S(E)
- Q(b);::QAB1(H),XP(f)
- S(a);::S(E)
- Refutation
- Q(b);
- Try
- S(E);CHECK
- Refutation
- Q(b);CHECK,XS(E)
- Try
- R(C);XP(f)
- Threat
- DUALS(12)
- Vars
- Q(b);CHECK::QAB(H)+R(C)
- Q(b);CHECK,XR(D)::QAB(H)+R(C)
- Refutation
- S(a);XP(B)
- Try
- Q(H);N_PINP(f)
- Threat
- DUALS(7)
- Vars
- Q(b);CHECK::QAB(H)+R(C)
- Q(b);CHECK,OGATE,XR(D)::QAB(H)+R(C),XQ(b)
- Q(b);CHECK::QAB(H)+R(C),DCHECK,XQ(b)
- Refutation
- S(a);XP(B)
- Try
- Q(H);N_PINP(f)
- Threat
- DUALS(5)
- Vars
- Q(b);CHECK::QAB(H)+S(G)
- Q(b);CHECK,XR(D)::QAB(H)+S(G)
- Q(b);::QAB(H)+S(G)
- Refutation
- S(a);
- Try
- Actual
- R(D);
- Threat
- DUALS(7)
- Vars
- Q(b);CHECK::R(D)+S(E),DCHECK
- Q(b);CHECK::R(D)+S(E),DCHECK,XQ(b)
- Q(b);CHECK::R(D)+S(E),XQ(b)
- Q(b);CHECK::R(D)+S(E)
- Q(b);::R(D)+S(E),DCHECK
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