MESON Chess Problem Database

Problem Display
PID: 184911 (b6K/6QP/8/4P1p1/2P1k1r1/5Rn1/6B1/b5B1 w - - 0 1)

Gevers, Raymond

Bulletin Ouvrier des Echecs, 1948

b6K/6QP/8/4P1p1/2P1k1r1/5Rn1/6B1/b5B1

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Ra3+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kf4!
    • 1.Rb3+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kf4!
    • 1.Rc3+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kf4!
    • 1.Rxg3+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kf4!
    • 1.Rf5+?
      • 1...Kxf5
        • 2.Qf6#
      • 1...Kd3!
    • 1.Rf6+?
      • 1...Kxe5
        • 2.Qe7#
      • 1...Kd3!
    • 1.Qf6?
      • threat
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rxg3#
      • 1...Bc3
        • 2.Rxc3#
        • 2.Rxg3#
      • 1...Sf1
        • 2.Rg3#
        • 2.Qf5#
      • 1...Sh1
        • 2.Rg3#
        • 2.Qf5#
      • 1...Se2
        • 2.Rg3#
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Rg3#
        • 2.Qf5#
      • 1...Rf4!
    • 1.Qg6+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Kxe5!
    • 1.Qb7+?
      • 1...Kxe5
        • 2.Qe7#
      • 1...Bxb7!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Rf5#
      • 1...Bxe5+
        • 2.Rf6#
      • 1...Kxe5
        • 2.Qe7#
      • 1...Rf4
        • 2.Re3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sf1
        • 2.Qf5#
      • 1...Sh1
        • 2.Qf5#
      • 1...Se2
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);CHECK,XS(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(C)::QAR1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(E)::QAR2(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(4)
      • Vars
        • S(b);N_GUARD::QAB1(F),XS(b)
      • Refutation
        • R(d);
    • Try
      • Q(F);CHECK,P_SPINP(E)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(F),XS(b)
      • Refutation
        • K(c);P-FLIGHT,XP(E)
    • Try
      • Q(F);CHECK,P_SPINP(E)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(E)::QAR2(F)
      • Refutation
        • B(f);XQ(F)
  • Actual
    • Q(F);P_SPINP(E)
    • Threat
      • B(B)+R(C)
    • Vars
      • B(a);CHECK,SBLOCK,XP(E)::B(B)+R(C)
      • K(c);OGATEB,P-FLIGHT,XP(E)::QAR2(F)
      • R(d);SBLOCK::B(B)+R(C),DCHECK
      • B(a);N_GUARD::QAR1(F),XB(a)
      • B(f);N_GUARD::QAB1(F),XB(f)
      • S(b);N_GUARD::QAB1(F)
      • S(b);N_GUARD::QAB1(F),XS(b)
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