MESON Chess Problem Database

Problem Display
PID: 165383 (5R1r/7b/4Q3/K2PPrp1/1pB1k1P1/pN1N1p2/1q2pP2/B7 w - - 0 1)

Zilahi, Zoltan

Skakbladet, 1931

5R1r/7b/4Q3/K2PPrp1/1pB1k1P1/pN1N1p2/1q2pP2/B7

#2

11 + 10

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sbc5#
    • 1...Qd4
      • 2.Sd2#
    • 1...Qxe5
      • 2.Sd2#
      • 2.Sbc5#
    • 1...Qb1
      • 2.Sd2#
      • 2.Sbc5#
    • 1...Qa2
      • 2.Sbc5#
    • 1...Qc2
      • 2.Sbc5#
    • 1...Qd2
      • 2.Sxd2#
      • 2.Sbc5#
    • 1...Rf4
      • 2.Sdc5#
    • 1...Rxe5
      • 2.Sdc5#
    • 1...Bg8
      • 2.Qxf5#
  • Tries
    • 1.Bxb2?
      • threat
        • 2.Sd2#
        • 2.Sbc5#
      • 1...e1Q
        • 2.Sbc5#
      • 1...e1B
        • 2.Sbc5#
      • 1...axb2!
    • 1.Qc6?
      • threat
        • 2.d6#
      • 1...Qxe5
        • 2.Sd2#
        • 2.Sbc5#
      • 1...Rxe5
        • 2.Sdc5#
      • 1...Qd4
        • 2.Sd2#
      • 1...Bg8!
  • Keys
    • 1.d6!
      • threat
        • 2.Qd5#
      • 1...Qxe5+
        • 2.Sbc5#
      • 1...Rxe5+
        • 2.Sdc5#
      • 1...Qd4
        • 2.Sd2#
      • 1...Bg8
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(a);::S(C)
    • Q(a);N_GUARD::S(C)
    • R(g);::S(D)
    • R(g);P_PINP(H),P_SPINR(g),XP(I)::S(D)
    • B(i);N_GUARD::QAB1(J),XR(g)
  • Tries
    • Try
      • B(A);XQ(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::S(C)
      • Refutation
        • P(c);XB(A)
    • Try
      • Q(J);
      • Threat
        • QAB(J)+P(H)
      • Vars
        • R(g);P_PINP(H),SBLOCK,XP(I)::S(D)
        • Q(a);N_GUARD::S(C)
      • Refutation
        • B(i);
  • Actual
    • P(H);P_SPINP(I)
    • Threat
      • QAB1(J)
    • Vars
      • Q(a);CHECK,P_SPINQ(a),XP(I)::S(C)
      • R(g);CHECK,P_SPINR(g),XP(I)::S(D)
      • Q(a);N_GUARD::S(C)
      • B(i);N_GUARD::QAB1(J),XR(g)
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Developed and maintained by Brian Stephenson.
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