MESON Chess Problem Database
Problem Display
PID: 219390 (8/8/1n1p1p2/3Pkr2/1N1p1pP1/2rQ1K2/2p1P3/b1B1R3 w - - 0 1)
Wiberg, Bertil
Tidskrift for Schack, 1977
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxd3+
- 2.exd3#
- 1...Rc4
- 2.Qe4#
- 2.Qxf5#
- 1...Rc5
- 2.Qe4#
- 2.Qxf5#
- 1...Rc6
- 2.Qe4#
- 2.Qxf5#
- 1...Rc7
- 2.Qe4#
- 2.Qxf5#
- 1...Rc8
- 2.Qe4#
- 2.Qxf5#
- 1...Rg5
- 2.Bxf4#
- 1...Rh5
- 2.Bxf4#
- 1...Rxd3+
- Tries
- 1.Sc6+?
- 1...Rxc6
- 2.Qe4#
- 2.Qxf5#
- 1...Kxd5!
- 1...Rxc6
- 1.Be3?
- threat
- 2.Bxd4#
- 2.Qe4#
- 2.Qxf5#
- 2.Qxd4#
- 1...fxe3+
- 2.Qxf5#
- 1...Sxd5
- 2.Qe4#
- 2.Qxf5#
- 1...dxe3
- 2.Qe4#
- 1...Rg5
- 2.Bxd4#
- 2.Bxf4#
- 2.Qe4#
- 2.Qxd4#
- 1...Ra3
- 2.Qe4#
- 2.Qxf5#
- 1...Rb3
- 2.Qe4#
- 2.Qxf5#
- 1...Rc4
- 2.Qe4#
- 2.Qxf5#
- 1...Rc5
- 2.Qe4#
- 2.Qxf5#
- 1...Rc6
- 2.Qe4#
- 2.Qxf5#
- 1...Rc7
- 2.Qe4#
- 2.Qxf5#
- 1...Rc8
- 2.Qe4#
- 2.Qxf5#
- 1...Rh5
- 2.Bxd4#
- 2.Bxf4#
- 2.Qe4#
- 2.Qxd4#
- 1...Rxd3!
- threat
- 1.e3?
- threat
- 2.Qe4#
- 2.Qxf5#
- 2.Qxd4#
- 2.exd4#
- 2.exf4#
- 1...fxe3+
- 2.Qxf5#
- 1...Sxd5
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...dxe3
- 2.Qe4#
- 1...Rg5
- 2.Qe4#
- 2.Qxd4#
- 2.exd4#
- 2.exf4#
- 1...Ra3
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...Rb3
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...Rc4
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...Rc5
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...Rc6
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...Rc7
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...Rc8
- 2.Qe4#
- 2.Qxf5#
- 2.exd4#
- 2.exf4#
- 1...Rh5
- 2.Qe4#
- 2.Qxd4#
- 2.exd4#
- 2.exf4#
- 1...Rxd3!
- threat
- 1.Sc6+?
- Keys
- 1.e4!
- threat
- 2.exf5#
- 1...Rxd3+
- 2.Sxd3#
- 1...fxe4 ep+
- 2.Qxf5#
- 1...Sxd5
- 2.exd5#
- 1...dxe4 ep
- 2.Qe4#
- 1...Rg5
- 2.Bxf4#
- 1...Rh5
- 2.Bxf4#
- 1...Sc4
- 2.Sc6#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(c);CHECK,OGATE,XQ(D)::R(B)+P(C),XR(c)
- R(g);N_GUARD::B(A),XP(e)
- Tries
- Try
- S(F);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINP(d),XP(H)
- Try
- B(A);N_SPINQ(D)
- Threat
- DUALS(4)
- Vars
- P(e);CHECK,XB(A)::QAR1(D),XR(g)
- P(d);XB(A)::QAR1(D)
- Refutation
- R(c);P_PINB(A),XQ(D)
- Try
- P(C);N_SPINQ(D)
- Threat
- DUALS(5)
- Vars
- P(e);CHECK,P_SPINP(e),XP(C)::QAR1(D),XR(g)
- P(d);P_SPINP(d),XP(C)::QAR1(D)
- Refutation
- R(c);P_PINP(C),XQ(D)
- Try
- Actual
- P(C);
- Threat
- R(B)+P(C),XR(g)
- Vars
- R(c);CHECK,XQ(D)::S(F),XR(c)
- P(e);CHECK,EP,N_PINQ(D),P_SPINP(e),XP(C)::QAR1(D),XR(g)
- S(h);OGATE,XP(H)::R(B)+P(C),XS(h)
- P(d);EP,N_PINQ(D),P_SPINP(d),XP(C)::QAR1(D)
- R(g);N_GUARD::B(A),XP(e)
- S(h);S_CUTR(c)::S(F)
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