MESON Chess Problem Database
Problem Display
PID: 32523 (r4N2/1PP2PP1/3k1PK1/5P2/6Pp/2Q2Nrp/7B/7B w - - 0 1)
Gavrilov, G
De Problemist, 1929
#2
13 + 5
SOLUTION
- SOUND
- Sets
- 1...Rd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rd8
- Tries
- 1.Se1?
- 1...Ra1
- 2.c8S#
- 1...Ra2
- 2.c8S#
- 1...Ra3
- 2.c8S#
- 1...Ra4
- 2.c8S#
- 1...Ra5
- 2.c8S#
- 1...Ra6
- 2.c8S#
- 1...Ra7
- 2.c8S#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc8
- 2.bxc8S#
- 1...Rd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Re8
- 2.fxe8S#
- 1...Rxf8!
- 1...Ra1
- 1.Sg1?
- 1...Ra1
- 2.c8S#
- 1...Ra2
- 2.c8S#
- 1...Ra3
- 2.c8S#
- 1...Ra4
- 2.c8S#
- 1...Ra5
- 2.c8S#
- 1...Ra6
- 2.c8S#
- 1...Ra7
- 2.c8S#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc8
- 2.bxc8S#
- 1...Rd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Re8
- 2.fxe8S#
- 1...Rxf8!
- 1...Ra1
- 1.Sd2?
- 1...Ra1
- 2.c8S#
- 1...Ra2
- 2.c8S#
- 1...Ra3
- 2.c8S#
- 1...Ra4
- 2.c8S#
- 1...Ra5
- 2.c8S#
- 1...Ra6
- 2.c8S#
- 1...Ra7
- 2.c8S#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc8
- 2.bxc8S#
- 1...Rd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Re8
- 2.fxe8S#
- 1...Rxf8!
- 1...Ra1
- 1.Sxh4?
- threat
- 2.Bxg3#
- 1...Ra4
- 2.c8S#
- 1...Ra5
- 2.c8S#
- 1...Re8
- 2.fxe8S#
- 1...Rxf8!
- threat
- 1.Sg5?
- 1...Ra1
- 2.c8S#
- 1...Ra2
- 2.c8S#
- 1...Ra3
- 2.c8S#
- 1...Ra4
- 2.c8S#
- 1...Ra5
- 2.c8S#
- 1...Ra6
- 2.c8S#
- 1...Ra7
- 2.c8S#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc8
- 2.bxc8S#
- 1...Rd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Re8
- 2.fxe8S#
- 1...Rxf8!
- 1...Ra1
- 1.Bxg3+?
- 1...Kd5
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sxh4#
- 2.Sg5#
- 2.bxa8Q#
- 2.bxa8B#
- 1...hxg3!
- 1...Kd5
- 1.Qc4?
- 1...Ra1
- 2.c8S#
- 1...Ra2
- 2.c8S#
- 1...Ra3
- 2.c8S#
- 1...Ra4
- 2.c8S#
- 1...Ra5
- 2.c8S#
- 1...Ra6
- 2.c8S#
- 1...Ra7
- 2.c8S#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc8
- 2.bxc8S#
- 1...Rd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Re8
- 2.fxe8S#
- 1...Rxf8!
- 1...Ra1
- 1.b8S?
- threat
- 2.Qe5#
- 2.Qc6#
- 1...Kd5
- 2.Qd4#
- 2.Qc6#
- 1...Ra5
- 2.Qc6#
- 1...Ra6
- 2.Qe5#
- 1...Rxb8!
- threat
- 1.c8Q?
- threat
- 2.Qd2#
- 2.Qd4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qd3#
- 2.Q3c5#
- 2.Q3c6#
- 2.Q8c5#
- 2.Q8c6#
- 1...Kd5
- 2.Qd4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd3#
- 2.Q3c6#
- 2.Q8c6#
- 1...Ra2
- 2.Qd4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qd3#
- 2.Q3c5#
- 2.Q3c6#
- 2.Q8c5#
- 2.Q8c6#
- 2.Qd8#
- 1...Ra3
- 2.Qd4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Q3c5#
- 2.Q3c6#
- 2.Q8c5#
- 2.Q8c6#
- 2.Qd8#
- 1...Ra4
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Q3c5#
- 2.Q3c6#
- 2.Q8c5#
- 2.Q8c6#
- 2.Qd8#
- 1...Ra5
- 2.Qe6#
- 2.Qd7#
- 2.Q3c6#
- 2.Q8c6#
- 2.Qd8#
- 1...Ra6
- 2.Qd2#
- 2.Qd4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qd3#
- 2.Q3c5#
- 2.Q8c5#
- 2.Qd8#
- 1...Rxc8!
- threat
- 1.c8S+?
- 1...Kd5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Rxc8!
- 1...Kd5
- 1.c8R?
- threat
- 2.Qd2#
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 2.Qc5#
- 2.Qc6#
- 1...Kd5
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 2.Qc6#
- 1...Ra2
- 2.Rd8#
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 2.Qc5#
- 2.Qc6#
- 1...Ra3
- 2.Rd8#
- 2.Qd4#
- 2.Qe5#
- 2.Qc5#
- 2.Qc6#
- 1...Ra4
- 2.Rd8#
- 2.Qe5#
- 2.Qc5#
- 2.Qc6#
- 1...Ra5
- 2.Rd8#
- 2.Qc6#
- 1...Ra6
- 2.Rd8#
- 2.Qd2#
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 2.Qc5#
- 1...Rxc8!
- threat
- 1.Se1?
- Keys
- 1.Se5!
- 1...Rxg4+
- 2.Sxg4#
- 1...Rxc3
- 2.Sd3#
- 1...Rxf8
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rg2
- 2.Qc6#
- 1...Rf3
- 2.Qc6#
- 1...Rg1
- 2.Qc6#
- 1...Rd3
- 2.Sxd3#
- 2.Qc6#
- 1...Re3
- 2.Qc6#
- 1...Ra1
- 2.c8S#
- 1...Ra2
- 2.c8S#
- 1...Ra3
- 2.c8S#
- 1...Ra4
- 2.c8S#
- 1...Ra5
- 2.c8S#
- 1...Ra6
- 2.c8S#
- 1...Ra7
- 2.c8S#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc8
- 2.bxc8S#
- 1...Rd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Re8
- 2.fxe8S#
- 1...Rxg4+
- 1.Se5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 15
- REMOVED MATES = 0
- Sets
- R(e);OGATE::PXR(e)=Q
- Tries
- Try
- S(D);
- Vars
- R(e);N_GUARD::P=S
- R(e);OGATE::PXR(e)=Q
- R(e);OGATE::PXR(e)=S
- Refutation
- R(e);XS(M)
- Try
- S(D);
- Vars
- R(e);N_GUARD::P=S
- R(e);OGATE::PXR(e)=Q
- R(e);OGATE::PXR(e)=S
- Refutation
- R(e);XS(M)
- Try
- S(D);
- Vars
- R(e);N_GUARD::P=S
- R(e);OGATE::PXR(e)=Q
- R(e);OGATE::PXR(e)=S
- Refutation
- R(e);XS(M)
- Try
- S(D);XP(c)
- Threat
- B(B),XR(a)
- Vars
- R(e);N_GUARD::P=S
- R(e);OGATE::PXR(e)=S
- Refutation
- R(e);XS(M)
- Try
- S(D);N_SPINP(E)
- Vars
- R(e);N_GUARD::P=S
- R(e);OGATE::PXR(e)=Q
- R(e);OGATE::PXR(e)=S
- Refutation
- R(e);XS(M)
- Try
- B(B);CHECK,N_SPINP(E),XR(a)
- Refutation
- P(c);XB(B)
- Try
- Q(C);
- Vars
- R(e);N_GUARD::P=S
- R(e);OGATE::PXR(e)=Q
- R(e);OGATE::PXR(e)=S
- Refutation
- R(e);XS(M)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- R(e);::QAR1(C)
- R(e);::QAB1(C)
- Refutation
- R(e);XS(I)
- Try
- P(J);
- Threat
- DUALS(10)
- Refutation
- R(e);XQ(J)
- Try
- P(J);CHECK
- Vars
- K(d);N_SPINR(a),P-FLIGHT::PXR(e)=Q
- Refutation
- R(e);XS(J)
- Try
- P(J);
- Threat
- DUALS(6)
- Refutation
- R(e);XR(J)
- Try
- Actual
- S(D);N_PINR(a)
- Vars
- R(a);CHECK,XP(E)::B(B)+S(D),XR(a)
- R(a);N_PINP(E),XQ(C)::B(B)+S(D)
- R(e);OGATE,XS(M)::PXR(e)=Q
- R(a);::QAR1(C)
- R(a);N_PINP(E)::QAR1(C)
- R(e);N_GUARD::P=S
- R(e);OGATE::PXR(e)=Q
- R(e);OGATE::PXR(e)=S
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