MESON Chess Problem Database
Problem Display
PID: 206693 (8/8/1p1Qp1p1/prRp2P1/Prpk4/Bp3PN1/1P1K3N/6n1 w - - 0 1)
Sonnenfeld, Pal
Pesti Naplo, 1925
#2
10 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxa4
- 2.Qf4#
- 1...Rxc5
- 2.Qf4#
- 1...Se2
- 2.Sxe2#
- 1...Sxf3+
- 2.Sxf3#
- 1...Sh3
- 2.Se2#
- 1...c3+
- 2.bxc3#
- 1...bxc5
- 2.Qf4#
- 1...e5
- 2.Qxd5#
- 1...Rxa4
- Tries
- 1.Shf1?
- 1...c3+
- 2.bxc3#
- 1...Rxa4
- 2.Qf4#
- 1...Rxc5
- 2.Qf4#
- 1...bxc5
- 2.Qf4#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...e5
- 2.Qxd5#
- 1...Sxf3+!
- 1...c3+
- 1.Sg4?
- 1...c3+
- 2.bxc3#
- 1...Rxa4
- 2.Qf4#
- 2.Qe5#
- 1...Rxc5
- 2.Qf4#
- 2.Qe5#
- 1...bxc5
- 2.Qf4#
- 2.Qe5#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...e5
- 2.Qxd5#
- 1...Sxf3+!
- 1...c3+
- 1.Sf5+?
- 1...exf5
- 2.Qxd5#
- 1...gxf5!
- 1...exf5
- 1.Rxc4+?
- 1...Rxc4
- 2.Qf4#
- 1...Kxc4!
- 1...Rxc4
- 1.Rxb5?
- threat
- 2.Qf4#
- 1...Sxf3+
- 2.Sxf3#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...e5
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxb6#
- 1...c3+!
- threat
- 1.Rc6?
- threat
- 2.Qf4#
- 1...Sxf3+
- 2.Sxf3#
- 1...c3+
- 2.bxc3#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...e5!
- threat
- 1.Rc7?
- threat
- 2.Qf4#
- 1...Sxf3+
- 2.Sxf3#
- 1...c3+
- 2.bxc3#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...e5!
- threat
- 1.Rc8?
- threat
- 2.Qf4#
- 1...Sxf3+
- 2.Sxf3#
- 1...c3+
- 2.bxc3#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...e5!
- threat
- 1.Qc7?
- 1...Sxf3+
- 2.Sxf3#
- 1...c3+
- 2.bxc3#
- 1...Rxa4
- 2.Qf4#
- 1...Rxc5
- 2.Qf4#
- 1...bxc5
- 2.Qf4#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...e5!
- 1...Sxf3+
- 1.axb5?
- 1...Sxf3+
- 2.Sxf3#
- 1...c3+
- 2.bxc3#
- 1...Rxb5
- 2.Qf4#
- 1...bxc5
- 2.Qf4#
- 1...e5
- 2.Rxd5#
- 2.Qxd5#
- 1...Ra4
- 2.Qf4#
- 1...Se2
- 2.Sxe2#
- 1...Sh3
- 2.Se2#
- 1...a4!
- 1...Sxf3+
- 1.Shf1?
- Keys
- 1.f4!
- 1...Sf3+
- 2.Sxf3#
- 1...c3+
- 2.bxc3#
- 1...Rxa4
- 2.Qe5#
- 1...Rxc5
- 2.Qe5#
- 1...bxc5
- 2.Qe5#
- 1...e5
- 2.Qxd5#
- 1...Se2
- 2.Sf3#
- 1...Sh3
- 2.Sf3#
- 1...Sf3+
- 1.f4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);XP(G)::QAR2(J)
- R(g);SBLOCK,XR(H)::QAR2(J)
- S(a);N_GUARD::S(F),XS(a)
- S(a);CHECK,XP(E)::S(C),XS(a)
- S(a);N_GUARD::S(F)
- P(d);CHECK,OGATE::P(A),XP(d)
- P(i);SBLOCK,XR(H)::QAR2(J)
- P(j);N_GUARD::QAR1(J),XP(h)
- Tries
- Try
- S(C);
- Vars
- P(d);CHECK,OGATE::P(A),XP(d)
- R(c);XP(G)::QAR2(J)
- R(g);SBLOCK,XR(H)::QAR2(J)
- P(i);SBLOCK,XR(H)::QAR2(J)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- P(j);N_GUARD::QAR1(J),XP(h)
- Refutation
- S(a);CHECK,XP(E)
- Try
- S(C);
- Vars
- P(d);CHECK,OGATE::P(A),XP(d)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- P(j);N_GUARD::QAR1(J),XP(h)
- Refutation
- S(a);CHECK,XP(E)
- Try
- S(F);CHECK
- Vars
- P(j);XS(F)::QAR1(J),XP(h)
- Refutation
- P(k);XS(F)
- Try
- R(H);CHECK,XP(d)
- Vars
- R(c);SBLOCK,XR(H)::QAR2(J)
- Refutation
- K(e);N_SPINP(h),P-FLIGHT,XR(H)
- Try
- R(H);XR(g)
- Threat
- QAR2(J)
- Vars
- S(a);CHECK,XP(E)::S(C),XS(a)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- Refutation
- P(d);CHECK
- Try
- R(H);
- Threat
- QAR2(J)
- Vars
- S(a);CHECK,XP(E)::S(C),XS(a)
- P(d);CHECK,OGATE::P(A),XP(d)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- Refutation
- P(j);
- Try
- R(H);
- Threat
- QAR2(J)
- Vars
- S(a);CHECK,XP(E)::S(C),XS(a)
- P(d);CHECK,OGATE::P(A),XP(d)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- Refutation
- P(j);
- Try
- R(H);
- Threat
- QAR2(J)
- Vars
- S(a);CHECK,XP(E)::S(C),XS(a)
- P(d);CHECK,OGATE::P(A),XP(d)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- Refutation
- P(j);
- Try
- Q(J);N_PINP(h)
- Vars
- S(a);CHECK,XP(E)::S(C),XS(a)
- P(d);CHECK,OGATE::P(A),XP(d)
- R(c);XP(G)::QAR2(J)
- R(g);SBLOCK,XR(H)::QAR2(J)
- P(i);SBLOCK,XR(H)::QAR2(J)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- Refutation
- P(j);
- Try
- P(G);XR(g)
- Vars
- S(a);CHECK,XP(E)::S(C),XS(a)
- P(d);CHECK,OGATE::P(A),XP(d)
- R(c);XP(G)::QAR2(J)
- P(i);SBLOCK,XR(H)::QAR2(J)
- R(c);::QAR2(J)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- Refutation
- P(f);
- Try
- Actual
- P(E);
- Vars
- S(a);CHECK,N_GUARD::S(C),XS(a)
- P(d);CHECK,OGATE::P(A),XP(d)
- R(c);XP(G)::QAB1(J)
- R(g);SBLOCK,XR(H)::QAB1(J)
- P(i);SBLOCK,XR(H)::QAB1(J)
- P(j);N_GUARD::QAR1(J),XP(h)
- S(a);N_GUARD::S(C)
Developed and maintained by Brian Stephenson.
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