MESON Chess Problem Database
Problem Display
PID: 248921 (8/2pKp3/2P1N1N1/r2k3r/3p4/3Q4/1P2nPp1/5b2 w - - 0 1)
Popp, Willy
Die Schwalbe, 1971
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Sxc7#
- 1...Re5
- 2.Sxe7#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...Rc5
- Tries
- 1.Sgf4+?
- 1...Sxf4
- 2.Qxd4#
- 1...Ke5!
- 1...Sxf4
- 1.b3?
- threat
- 2.Qf3#
- 1...Rh3
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Re5
- 2.Sxe7#
- 1...Rf5
- 2.Qxf5#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...g1S!
- threat
- 1.f4?
- threat
- 2.Sxe7#
- 1...Sxf4
- 2.Qxd4#
- 1...Rh7!
- threat
- 1.Sgf4+?
- Keys
- 1.f3!
- threat
- 2.Qb3#
- 1...Ra3
- 2.Qb5#
- 1...Ra4
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Rc5
- 2.Sxc7#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- threat
- 1.f3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(e);SBLOCK::S(E),XP(h)
- R(g);SBLOCK::S(F),XP(i)
- S(b);N_GUARD::QAR1(C),XP(d)
- Tries
- Try
- S(F);CHECK
- Vars
- S(b);XS(F)::QAR1(C),XP(d)
- Refutation
- K(f);N_SPINP(d),P-FLIGHT
- Try
- P(A);
- Threat
- QAB(C)
- Vars
- R(g);N_GUARD::QAR2(C)
- R(g);SBLOCK::S(F),XP(i)
- R(g);N_GUARD::QAR2(C),XR(g)
- S(b);N_GUARD::QAR1(C),XP(d)
- Refutation
- P(c);
- Try
- P(B);
- Threat
- S(F),XP(i)
- Vars
- S(b);N_GUARD,XP(B)::QAR1(C),XP(d)
- Refutation
- R(g);
- Try
- Actual
- P(B);
- Threat
- QAB(C)
- Vars
- R(e);N_GUARD::QAR2(C)
- R(e);N_GUARD::QAR2(C),XR(e)
- R(e);SBLOCK::S(E),XP(h)
- S(b);N_GUARD::QAR1(C),XP(d)
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