MESON Chess Problem Database

Problem Display
PID: 41572 (3RR3/1K1BnrN1/1ppB2p1/2qk1p2/3pN3/1P2P3/2P5/3Q4 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2002

3RR3/1K1BnrN1/1ppB2p1/2qk1p2/3pN3/1P2P3/2P5/3Q4

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Qxd4#
    • 1...Qxd6
      • 2.Qxd4#
    • 1...Qxc2
      • 2.Qxd4#
    • 1...Qa5
      • 2.Qxd4#
    • 1...Qb5
      • 2.Qxd4#
    • 1...Sc8
      • 2.Re5#
    • 1...Sg8
      • 2.Re5#
    • 1...fxe4
      • 2.Be6#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Bxc6#
      • 1...Rxg7
        • 2.Sf6#
      • 1...Qd6
        • 2.Qxd4#
      • 1...Kxe4!
    • 1.Bb8?
      • threat
        • 2.Bxc6#
      • 1...Rxg7
        • 2.Sf6#
      • 1...Qd6
        • 2.Qxd4#
      • 1...Sc8
        • 2.Re5#
      • 1...Sg8
        • 2.Re5#
      • 1...Kxe4!
    • 1.Rxe7?
      • threat
        • 2.Re5#
      • 1...Qxd6
        • 2.Bxc6#
        • 2.Qxd4#
        • 2.c4#
      • 1...fxe4
        • 2.Be6#
      • 1...Rxe7!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Bxc6#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Rxg7
        • 2.Sf6#
      • 1...Qd6
        • 2.Qxd4#
      • 1...Sc8
        • 2.Re5#
      • 1...Sg8
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_GUARD::QAR1(A),XP(a)
    • Q(b);N_GUARD,XB(F)::QAR1(A),XP(a)
    • Q(b);N_GUARD,XP(B)::QAR1(A),XP(a)
    • S(h);OGATE,P_PINB(H)::R1(K)
    • P(d);SBLOCK,XS(E)::B(H)
  • Tries
    • Try
      • B(F);
      • Threat
        • R(J)+B(H),DCHECK,XP(f)
      • Vars
        • R(i);N_GUARD,XS(I)::S(E)
        • Q(b);N_GUARD::QAR1(A),XP(a)
      • Refutation
        • K(c);N_SPINP(a),P_SPINS(h),S_FLIGHT,XS(E)
    • Try
      • B(F);
      • Threat
        • R(J)+B(H),DCHECK,XP(f)
      • Vars
        • R(i);N_GUARD,XS(I)::S(E)
        • Q(b);N_GUARD::QAR1(A),XP(a)
        • S(h);OGATE,P_PINB(H)::R1(K)
      • Refutation
        • K(c);N_SPINP(a),P_SPINS(h),S_FLIGHT,XS(E)
    • Try
      • R(K);XS(h)
      • Threat
        • R1(K)
      • Vars
        • P(d);SBLOCK,XS(E)::B(H)
      • Refutation
        • R(i);P_PINB(H),XR(K)
  • Actual
    • B(F);
    • Threat
      • R(J)+B(H),DCHECK,XP(f)
    • Vars
      • K(c);N_SPINP(a),OGATEB,P_SPINS(h),S_FLIGHT,XS(E)::QAB(A)
      • R(i);N_GUARD,XS(I)::S(E)
      • Q(b);N_GUARD::QAR1(A),XP(a)
      • S(h);OGATE,P_PINB(H)::R1(K)
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