MESON Chess Problem Database

Problem Display
PID: 231842 (4R3/1p6/Rb1PN3/1P1kpK2/8/N6n/n1p2P1B/6Q1 w - - 0 1)

Schneider, M?

Schweizerische Schachzeitung, 1987

4R3/1p6/Rb1PN3/1P1kpK2/8/N6n/n1p2P1B/6Q1

#2

10 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • threat
        • 2.Qxe5#
      • 1...Kxd6
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxa2#
      • 1...e4
        • 2.Qe5#
        • 2.Qxa2#
      • 1...Sc3!
    • 1.Qe1?
      • threat
        • 2.Qxe5#
      • 1...Kxd6
        • 2.Qd2#
      • 1...Bd4
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Be3!
    • 1.Qh1+?
      • 1...e4
        • 2.Qxe4#
      • 1...Kxd6!
    • 1.Qg2+?
      • 1...e4
        • 2.Qxe4#
      • 1...Kxd6!
    • 1.Qg3?
      • threat
        • 2.Qxe5#
      • 1...Kxd6
        • 2.Qd3#
      • 1...Bd4
        • 2.Qb3#
      • 1...e4
        • 2.Qe5#
        • 2.Qb3#
      • 1...Sf4!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qxe5#
      • 1...Kxd6
        • 2.Rd8#
      • 1...Bd4
        • 2.Qxb7#
      • 1...e4
        • 2.Qe5#
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • K(d);P-FLIGHT,P_SPINB(f),P_SPINP(e),XP(H)::QAR2(A)
        • B(f);::QAB(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • K(d);P-FLIGHT,P_SPINB(f),P_SPINP(e),XP(H)::QAR(A)
        • B(f);::QAB1(A)
        • P(e);::QAB1(A),XP(e)
      • Refutation
        • B(f);
    • Try
      • Q(A);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAB1(A),XP(e)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(f),P_SPINP(e),XP(H)
    • Try
      • Q(A);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAB1(A),XP(e)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(f),P_SPINP(e),XP(H)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • K(d);P-FLIGHT,P_SPINB(f),P_SPINP(e),XP(H)::QAR(A)
        • B(f);::QAB(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(e)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINB(f),P_SPINP(e),XP(H)::R(J)
      • B(f);::QAB(A),XP(g)
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