MESON Chess Problem Database
Problem Display
PID: 86702 (2rR4/5n2/3p4/R4P2/1P1kNpq1/pP3P1n/3P1p2/KQ2NbB1 w - - 0 1)
Gross, Erwin
The Problemist, 1975
#2
12 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxf3
- 2.Sxf3#
- 1...Bg2
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Shg5
- 2.Bxf2#
- 1...Se5
- 2.Rxd6#
- 1...Sfg5
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Sh8
- 2.Rxd6#
- 1...d5
- 2.Raxd5#
- 2.Rdxd5#
- 1...Qxf3
- Tries
- 1.Sxf2?
- threat
- 2.Qe4#
- 1...Qxf3
- 2.Sxf3#
- 1...Qxf5
- 2.Sxh3#
- 1...Rc2
- 2.Sxc2#
- 1...Bd3
- 2.Qxd3#
- 1...Shg5
- 2.Sxg4#
- 1...Sfg5
- 2.Rxd6#
- 1...Rc1!
- threat
- 1.Sc3?
- threat
- 2.Rd5#
- 2.Qe4#
- 1...Qxf3
- 2.Sxf3#
- 1...Rxc3
- 2.Qe4#
- 1...Rc5
- 2.Qe4#
- 1...Bb5
- 2.Qe4#
- 1...d5
- 2.Raxd5#
- 2.Rdxd5#
- 2.Qe4#
- 1...Bd3
- 2.Rd5#
- 2.Qxd3#
- 1...Bc4
- 2.Qe4#
- 1...Shg5
- 2.Bxf2#
- 2.Rd5#
- 1...Sfg5
- 2.Rd5#
- 2.Rxd6#
- 1...Qxf5!
- threat
- 1.Sg5?
- threat
- 2.Se6#
- 2.Qe4#
- 1...Qxf3
- 2.Sexf3#
- 2.Sgxf3#
- 2.Se6#
- 1...Qxg5
- 2.Qe4#
- 1...Shxg5
- 2.Bxf2#
- 1...Sfxg5
- 2.Rxd6#
- 1...Sxd8
- 2.Qe4#
- 1...Rc5
- 2.Qe4#
- 1...Bb5
- 2.Qe4#
- 1...d5
- 2.Raxd5#
- 2.Rdxd5#
- 2.Qe4#
- 1...Rc1
- 2.Se6#
- 1...Rc2
- 2.Se6#
- 1...Bd3
- 2.Se6#
- 2.Qxd3#
- 1...Bc4
- 2.Qe4#
- 1...Qxf5!
- threat
- 1.Sf6?
- threat
- 2.Rd5#
- 2.Qe4#
- 1...Qxf3
- 2.Sxf3#
- 1...Rc5
- 2.Qe4#
- 1...Bb5
- 2.Qe4#
- 1...d5
- 2.Raxd5#
- 2.Rdxd5#
- 2.Qe4#
- 1...Rc1
- 2.Rd5#
- 1...Rc2
- 2.Rd5#
- 1...Bd3
- 2.Rd5#
- 2.Qxd3#
- 1...Bc4
- 2.Qe4#
- 1...Shg5
- 2.Bxf2#
- 2.Rd5#
- 1...Sfg5
- 2.Rd5#
- 2.Rxd6#
- 1...Qxf5!
- threat
- 1.Qb2+?
- 1...Rc3
- 2.Qxc3#
- 1...axb2+!
- 1...Rc3
- 1.Sxf2?
- Keys
- 1.Sxd6!
- threat
- 2.Qe4#
- 1...Qxf3
- 2.Sxf3#
- 1...Qxf5
- 2.Sxf5#
- 1...Rc1
- 2.Sxf7#
- 1...Rc2
- 2.Sxf7#
- 1...Bd3
- 2.Qxd3#
- 1...Shg5
- 2.Bxf2#
- 1...Sfg5
- 2.Sxc8#
- threat
- 1.Sxd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- Q(g);XP(G)::S(C),XQ(g)
- B(a);N_GUARD::QAR1(B)
- B(a);N_GUARD::QAR1(B),XB(a)
- S(d);N_GUARD::B(D),XP(b)
- S(i);N_GUARD::R(L),XP(h)
- Tries
- Try
- S(I);P_PINP(h),XP(b)
- Threat
- QAR1(B)
- Vars
- Q(g);XP(G)::S(C),XQ(g)
- Q(g);N_GUARD,XP(K)::B(D)+S(I),XS(d)
- R(j);N_GUARD::S(C),XR(j)
- B(a);N_GUARD::QAR1(B),XB(a)
- S(d);N_GUARD::B(D)+S(I),XQ(g)
- S(i);N_GUARD::R(L),XP(h)
- Refutation
- R(j);P_PINQ(B)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- Q(g);XP(G)::S(C),XQ(g)
- R(j);XS(I)::QAR1(B)
- R(j);::QAR1(B)
- B(a);::QAR1(B)
- Refutation
- Q(g);XP(K)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- Q(g);XS(I)::QAR1(B)
- S(d);N_GUARD,XS(I)::B(D),XP(b)
- S(i);N_GUARD,XS(I)::R(L),XP(h)
- S(i);XR(L)::QAR1(B)
- R(j);::QAR1(B)
- B(a);::QAR1(B)
- R(j);P_PINQ(B)::S(I)
- R(j);::S(I)
- Refutation
- Q(g);XP(K)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- Q(g);XP(G)::S(C),XQ(g)
- R(j);::QAR1(B)
- B(a);::QAR1(B)
- R(j);P_PINQ(B)::R1(J)
- R(j);::R1(J)
- Refutation
- Q(g);XP(K)
- Try
- Q(B);CHECK
- Vars
- R(j);N_GUARD,P_SPINR(j)::QAB1(B),XR(j)
- Refutation
- P(c);CHECK,XQ(B)
- Try
- Actual
- S(I);XP(h)
- Threat
- QAR1(B)
- Vars
- Q(g);XP(G)::S(C),XQ(g)
- Q(g);XP(K)::R(L)+S(I),DCHECK,XQ(g)
- R(j);N_GUARD,P_PINQ(B)::R(L)+S(I),XS(i)
- R(j);N_GUARD::R(L)+S(I),XS(i)
- B(a);N_GUARD::QAR1(B),XB(a)
- S(d);N_GUARD::B(D),XP(b)
- S(i);N_GUARD::R(L)+S(I),XR(j)
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