Meson Chess Problem Database

Maleika, Gerhard

Die Schwalbe, 1974

11 + 8

6490	yacpdb	2009

Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 7
Sets
- K(e);P-FLIGHT,P_SPINP(c)::S(G)
- B(h);SBLOCK::B(K)+R(J),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- P(c);XP(D)::S(B)
- P(c);::S(B)
Tries
- Try
  - S(G);CHECK
  - Vars
    - P(f);XQ(F)::S(B)
    - P(f);P_SPINP(f)::S(B)
  - Refutation
    - S(g);XQ(F)
- Try
  - R(J);CHECK
  - Vars
    - K(e);P-FLIGHT::QAB(F)
  - Refutation
    - K(e);P-FLIGHT,XR(J)
- Try
  - R(J);CHECK,XP(f)
  - Refutation
    - K(e);P-FLIGHT
- Try
  - R(J);CHECK
  - Refutation
    - K(e);P-FLIGHT
- Try
  - R(J);CHECK,XB(h)
  - Refutation
    - K(e);P-FLIGHT
- Try
  - Q(F);
  - Threat
    - QAR1(F)
  - Vars
    - K(e);P-FLIGHT,P_SPINS(b),XS(G)::QAR2(F)
    - P(c);XP(D)::QAR1(F)
    - B(h);SBLOCK::B(K)+R(J),DCHECK
    - S(b);::B(K)+R(J)
  - Refutation
    - B(h);
- Try
  - Q(F);CHECK
  - Vars
    - K(e);P-FLIGHT,P_SPINS(b),XS(G)::QAR1(F)
    - S(b);N_GUARD,P_SPINS(b)::QAB1(F),XS(b)
  - Refutation
    - K(e);P-FLIGHT,P_SPINP(c)
- Try
  - P(D);CHECK,XP(c)
  - Vars
    - K(e);P-FLIGHT::S(G)
  - Refutation
    - R(a);XP(D)
Actual
- Q(F);
- Threat
  - QAR1(F)
- Vars
  - K(e);P-FLIGHT,P_SPINP(c)::QAB1(F)
  - K(e);P-FLIGHT,P_SPINS(b),XS(G)::QAR2(F)
  - P(c);XP(D)::B(K)+R(J),DCHECK
  - B(h);N_GUARD::QAR1(F)
  - B(h);N_GUARD::QAR1(F),XB(h)
  - S(b);::B(K)+R(J),XP(c)

MESON Chess Problem Database