MESON Chess Problem Database
Problem Display
PID: 258948 (2B1N3/2n5/rn3pN1/1P1k1pRr/pK1p4/1p2pP2/4Q3/7b w - - 0 1)
Wirtanen, Erkki Aukusti
Die Schwalbe, 1967
#2
8 + 12
SOLUTION
- SOUND
- Sets
- 1...Rh2
- 2.Rxf5#
- 1...Rh3
- 2.Rxf5#
- 1...Rh4
- 2.Rxf5#
- 1...Rh6
- 2.Rxf5#
- 1...Rh7
- 2.Rxf5#
- 1...Rh8
- 2.Rxf5#
- 1...Bxf3
- 2.Qxf3#
- 1...Sc4
- 2.Qxc4#
- 1...Sd7
- 2.Qc4#
- 1...Sba8
- 2.Qc4#
- 1...Sxc8
- 2.Qc4#
- 1...Sxb5
- 2.Qxb5#
- 1...Se6
- 2.Bb7#
- 1...d3
- 2.Qxd3#
- 1...Rh2
- Tries
- 1.Rxh5?
- threat
- 2.Rxf5#
- 1...Bxf3
- 2.Qxf3#
- 1...Sxc8
- 2.Qc4#
- 1...Sxb5
- 2.Qxb5#
- 1...Sd7
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 1...Sc4
- 2.Qxc4#
- 1...Sxe8!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 2.Qxf5#
- 2.Qc5#
- 2.Qc6#
- 1...Rxg5
- 2.Qc5#
- 2.Qc6#
- 1...Bxf3
- 2.Qxf5#
- 2.Qc6#
- 1...Sxc8
- 2.Qe4#
- 2.Qxf5#
- 2.Qc4#
- 1...Sxb5
- 2.Qe4#
- 2.Qc5#
- 1...Sxe8
- 2.Qc5#
- 2.Qc6#
- 1...fxg5
- 2.Qxf5#
- 2.Qc5#
- 2.Qc6#
- 1...Sd7
- 2.Qe4#
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 2.Qc5#
- 1...Rh4
- 2.Rxf5#
- 2.Qxf5#
- 2.Qc5#
- 2.Qc6#
- 1...Sc4
- 2.Qe4#
- 2.Qxc4#
- 1...Sba8
- 2.Qe4#
- 2.Qxf5#
- 2.Qc4#
- 2.Qc5#
- 1...Se6
- 2.Bb7#
- 2.Qe4#
- 2.Qxf5#
- 2.Qc6#
- 1...bxc2!
- threat
- 1.Qxe3?
- threat
- 2.Sf4#
- 2.Se7#
- 2.Bb7#
- 2.Qe4#
- 1...Rxg5
- 2.Sf4#
- 2.Se7#
- 2.Bb7#
- 1...Bxf3
- 2.Sf4#
- 2.Se7#
- 2.Bb7#
- 2.Qxf3#
- 1...Sxc8
- 2.Sf4#
- 2.Qe4#
- 1...Sxb5
- 2.Se7#
- 2.Bb7#
- 2.Qe4#
- 2.Qe6#
- 1...Sxe8
- 2.Qe6#
- 1...fxg5
- 2.Se7#
- 2.Bb7#
- 2.Qe5#
- 1...Rh4
- 2.Se7#
- 2.Bb7#
- 2.Rxf5#
- 1...Rh7
- 2.Sf4#
- 2.Bb7#
- 2.Rxf5#
- 2.Qe4#
- 1...Ra7
- 2.Sf4#
- 2.Se7#
- 2.Qe4#
- 1...Sc4
- 2.Sf4#
- 2.Se7#
- 2.Qe4#
- 1...Sd7
- 2.Sf4#
- 2.Se7#
- 2.Qe4#
- 1...Sba8
- 2.Sf4#
- 2.Se7#
- 2.Qe4#
- 1...Se6
- 2.Se7#
- 2.Bxe6#
- 2.Bb7#
- 2.Qe4#
- 2.Qxe6#
- 1...dxe3!
- threat
- 1.Rxh5?
- Keys
- 1.Qh2!
- threat
- 2.Se7#
- 2.Sxf6#
- 2.Sxc7#
- 2.Qd6#
- 1...Rxh2
- 2.Rxf5#
- 1...Bxf3
- 2.Sxf6#
- 1...Sxc8
- 2.Sxc7#
- 1...Sxb5
- 2.Se7#
- 1...Sxe8
- 2.Se7#
- 1...fxg5
- 2.Se7#
- 2.Sf6#
- 2.Sxc7#
- 2.Qe5#
- 2.Qd6#
- 1...Sd7
- 2.Sxc7#
- 1...d3
- 2.Qd6#
- 1...Rh7
- 2.Sxf6#
- 2.Rxf5#
- 2.Qd6#
- 1...Ra7
- 2.Se7#
- 2.Sxf6#
- 2.Qd6#
- 1...Sc4
- 2.Se7#
- 2.Sxc7#
- 1...Sba8
- 2.Se7#
- 1...Se6
- 2.Se7#
- 2.Sxf6#
- 2.Bb7#
- 2.Qd6#
- 1...Sca8
- 2.Se7#
- 2.Sxf6#
- 2.Qd6#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(h);N_GUARD::R(E),XP(g)
- B(a);OGATE,XP(B)::QAB(A),XB(a)
- S(j);N_GUARD::QAB1(A),XS(j)
- S(j);N_GUARD::QAB1(A)
- S(j);N_GUARD,XB(G)::QAB1(A)
- S(l);OGATE,XP(D)::QAR2(A),XS(l)
- S(l);SBLOCK::B(G)
- P(e);OGATEB::QAR2(A),XP(e)
- Tries
- Try
- R(E);XR(h)
- Threat
- R(E),XP(g)
- Vars
- B(a);OGATE,XP(B)::QAB(A),XB(a)
- S(j);N_GUARD,XB(G)::QAB1(A)
- S(l);OGATE,XP(D)::QAR2(A),XS(l)
- S(j);N_GUARD::QAB1(A)
- P(e);OGATEB::QAR2(A),XP(e)
- S(j);N_GUARD::QAB1(A),XS(j)
- Refutation
- S(l);XS(H)
- Try
- Q(A);
- Threat
- DUALS(4)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);XP(c)
- Threat
- DUALS(4)
- Vars
- S(l);N_GUARD,XS(H)::QAB1(A)
- Refutation
- P(e);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(h);N_GUARD,XQ(A)::R(E),XP(g)
- B(a);XP(B)::S(H),XP(k)
- S(j);XB(G)::S(H),XS(l)
- S(l);XP(D)::S(F)
- S(l);XS(H)::S(F)
- S(j);::S(H),XS(l)
- P(e);::QAR1(A)
- S(j);::S(F)
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