MESON Chess Problem Database
Problem Display
PID: 47080 (3r2b1/1P6/pKp3pB/4PR1n/RN2k3/1pQp3B/5P2/2rN2b1 w - - 0 1)
Brehmer, Siegfried
Schach-Express, 1949
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Qe1#
- 2.f3#
- 1...Ra8
- 2.Qxd3#
- 1...Rb8
- 2.Qxd3#
- 1...Rc8
- 2.Qxd3#
- 1...Re8
- 2.Qxd3#
- 1...Rf8
- 2.Qxd3#
- 1...Bxf2+
- 2.Sxf2#
- 1...Bh2
- 2.f3#
- 1...Bd5
- 2.Qxd3#
- 1...Sg3
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sf6
- 2.Rf4#
- 1...Sg7
- 2.Rf4#
- 1...d2
- 2.Qe3#
- 1...c5
- 2.f3#
- 1...gxf5
- 2.Bg2#
- 1...Rd4
- Tries
- 1.Se3?
- threat
- 2.Sbd5#
- 2.Bg2#
- 2.f3#
- 1...Bxf2
- 2.Sd5#
- 2.Bg2#
- 1...gxf5
- 2.Bg2#
- 1...Sf4
- 2.Rxf4#
- 1...Ra1
- 2.Bg2#
- 2.f3#
- 1...Rf1
- 2.Sbd5#
- 2.Bg2#
- 1...Rd4
- 2.Bg2#
- 2.f3#
- 1...Rd5
- 2.Sbxd5#
- 2.Bg2#
- 2.f3#
- 1...Bc4
- 2.Bg2#
- 2.f3#
- 1...Bd5
- 2.Sbxd5#
- 2.Bg2#
- 2.Qxd3#
- 2.f3#
- 1...c5
- 2.Bg2#
- 2.f3#
- 1...g5
- 2.Sbd5#
- 2.Bg2#
- 1...Rxc3!
- threat
- 1.Sc2+?
- 1...Kd5
- 2.Qxb3#
- 2.Qc4#
- 2.Qxc6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bc4!
- 1...Kd5
- 1.Sxa6+?
- 1...Kd5
- 2.Sc7#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bc4!
- 1...Kd5
- 1.Qd2?
- threat
- 2.Qe3#
- 1...Kd4
- 2.Qxd3#
- 1...Bxf2+!
- threat
- 1.Qd4+?
- 1...Rxd4
- 2.f3#
- 1...Kxd4!
- 1...Rxd4
- 1.Qc5?
- threat
- 2.Qe3#
- 2.f3#
- 1...Bxf2
- 2.Sxf2#
- 1...gxf5
- 2.Bg2#
- 2.Qe3#
- 1...Sf4
- 2.Rxf4#
- 2.Qe3#
- 1...Rd4
- 2.f3#
- 1...Rxc5!
- threat
- 1.Qxc6+?
- 1...Kd4
- 2.Sc2#
- 2.Be3#
- 1...Rd5
- 2.Sc2#
- 1...Bd5
- 2.Sc2#
- 1...Rxc6+!
- 1...Kd4
- 1.e6?
- threat
- 2.Sd5#
- 2.Qe5#
- 1...Bxf2+
- 2.Sxf2#
- 1...gxf5
- 2.Bg2#
- 1...Sf4
- 2.Rxf4#
- 1...Ra1
- 2.Qe5#
- 1...Rd4
- 2.Qe1#
- 2.f3#
- 1...Rd5
- 2.Sxd5#
- 1...Bh2
- 2.Sd5#
- 2.f3#
- 1...c5
- 2.Qe5#
- 2.f3#
- 1...Rxc3!
- threat
- 1.Se3?
- Keys
- 1.Kc5!
- threat
- 2.Sd5#
- 1...Rxc3+
- 2.Sxc3#
- 1...Rd5+
- 2.Sxd5#
- 1...Bxf2+
- 2.Sxf2#
- 1...gxf5
- 2.Bg2#
- 1...Sf4
- 2.Rxf4#
- 1...Ra1
- 2.Qe1#
- 1...Rd4
- 2.f3#
- 1...Bc4
- 2.Qe1#
- 1...Bd5
- 2.Sxd5#
- threat
- 1.Kc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 11
- Sets
- R(j);N_GUARD::QAB1(C),XP(d)
- B(b);CHECK,XP(B)::S(A),XB(b)
- B(b);N_PINP(B)::P(B)
- B(k);S_CUTR(j)::QAB1(C),XP(d)
- S(f);N_GUARD::R1(H)
- S(f);N_GUARD::R1(H),XS(f)
- P(d);OGATE::QAR1(C)
- P(h);N_PINP(B)::P(B)
- P(i);SBLOCK,XR(H)::B(D)
- Tries
- Try
- S(A);N_SPINP(B)
- Threat
- DUALS(3)
- Vars
- P(i);XR(H)::B(D)
- S(f);N_GUARD::R1(H),XS(f)
- Refutation
- R(a);XQ(C)
- Try
- S(F);CHECK
- Refutation
- B(k);P_SPINB(k)
- Try
- S(F);CHECK,XP(g)
- Vars
- K(e);S_FLIGHT::S(F)
- Refutation
- B(k);P_SPINB(k)
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- K(e);N_PINP(B),P-FLIGHT,P_SPINP(d)::QAR1(C),XP(d)
- Refutation
- B(b);CHECK,XP(B)
- Try
- Q(C);CHECK,N_SPINP(B)
- Vars
- R(j);SBLOCK,XQ(C)::P(B)
- Refutation
- K(e);P-FLIGHT,XQ(C)
- Try
- Q(C);N_SPINP(B)
- Threat
- DUALS(2)
- Vars
- B(b);P_PINQ(C),XP(B)::S(A),XB(b)
- R(j);::P(B)
- Refutation
- R(a);XQ(C)
- Try
- Q(C);CHECK,XP(h)
- Vars
- R(j);P_SPINR(j)::R(E)+S(F)
- B(k);P_SPINB(k)::R(E)+S(F)
- Refutation
- R(a);CHECK,XQ(C)
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,XP(B)::S(A),XB(b)
- P(i);SBLOCK,XR(H)::B(D)
- S(f);N_GUARD::R1(H),XS(f)
- R(a);::QAR1(C)
- R(j);::R(E)+S(F),XR(j)
- Refutation
- R(a);XQ(C)
- Try
- Actual
- K(I);P_SPINQ(C),S_FLIGHT
- Threat
- R(E)+S(F)
- Vars
- R(a);CHECK,XQ(C)::S(A),XR(a)
- R(j);CHECK::R(E)+S(F),XR(j)
- B(b);CHECK,XP(B)::S(A),XB(b)
- P(i);SBLOCK,XR(H)::B(D)
- S(f);N_GUARD::R1(H),XS(f)
- R(a);N_PINQ(C)::QAR(C)
- R(j);N_PINP(B)::P(B)
- B(k);N_PINQ(C)::QAR(C)
- B(k);::R(E)+S(F),XB(k)
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