MESON Chess Problem Database

Problem Display
PID: 75130 (8/7K/2p2B2/2N3p1/6p1/1B1p1PQ1/pP6/Rbkr2NR w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2007

8/7K/2p2B2/2N3p1/6p1/1B1p1PQ1/pP6/Rbkr2NR

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Bxg5#
    • 1...Re1
      • 2.Qxe1#
    • 1...Rd2
      • 2.Se2#
    • 1...d2+
      • 2.Sd3#
  • Tries
    • 1.Bc3?
      • 1...d2+
        • 2.Sd3#
      • 1...Rxg1
        • 2.Sxd3#
        • 2.Rxg1#
        • 2.Qxg1#
      • 1...Re1
        • 2.Sxd3#
        • 2.Qxe1#
      • 1...Rf1
        • 2.Sxd3#
      • 1...Rd2
        • 2.Se2#
      • 1...gxf3!
    • 1.Bxg5+?
      • 1...Rd2
        • 2.Sxd3#
      • 1...d2+
        • 2.Sd3#
      • 1...Kxb2!
    • 1.Qe1?
      • threat
        • 2.Sxd3#
        • 2.Qc3#
        • 2.Qxd1#
      • 1...d2+
        • 2.Sd3#
      • 1...Rxe1!
    • 1.Qf4+?
      • 1...Rd2
        • 2.Se2#
        • 2.Sh3#
        • 2.Sxd3#
      • 1...d2+
        • 2.Sd3#
      • 1...gxf4!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qc3#
      • 1...d2+
        • 2.Sd3#
      • 1...Kd2
        • 2.Bxg5#
      • 1...Rd2
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINB(a),S_FLIGHT::B(I),XP(g)
    • R(c);OGATEB::QAR2(G),XR(c)
    • R(c);SBLOCK::R(C)+S(B),DCHECK
    • P(e);CHECK,SBLOCK,S_CUTR(c)::S(H)
  • Tries
    • Try
      • B(I);
      • Vars
        • P(e);CHECK,S_CUTR(c)::S(H)
        • R(c);N_GUARD::S(H),XP(e)
        • R(c);::R(C)+S(B),DCHECK
      • Refutation
        • P(f);XP(F)
    • Try
      • B(I);CHECK,XP(g)
      • Vars
        • R(c);P_SPINR(c)::S(H),XP(e)
        • P(e);CHECK,P_SPINP(e)::S(H)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XP(D)
    • Try
      • Q(G);P_PINR(c)
      • Threat
        • DUALS(3)
      • Vars
        • P(e);CHECK::S(H)
      • Refutation
        • R(c);N_SPINR(c),XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • P(e);CHECK,P_SPINP(e)::S(H)
      • Refutation
        • P(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G)
    • Vars
      • P(e);CHECK,SBLOCK,S_CUTR(c)::S(H)
      • K(b);N_SPINB(a),S_FLIGHT::B(I),XP(g)
      • R(c);SBLOCK::R(C)+S(B),DCHECK
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