MESON Chess Problem Database

Problem Display
PID: 233784 (q1R1B2K/r3B2p/2p1p3/Np1k1p2/1P3Pn1/3Pp1Nr/p2n1P1p/Q7 w - - 0 1)

Schneider, Michael

Freie Presse, 1966

q1R1B2K/r3B2p/2p1p3/Np1k1p2/1P3Pn1/3Pp1Nr/p2n1P1p/Q7

#2

11 + 14

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Bxc6#
    • 1...Rb7
      • 2.Bxc6#
    • 1...Sxf2
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qe5#
    • 1...Sh6
      • 2.Qe5#
    • 1...c5
      • 2.Rxc5#
    • 1...e5
      • 2.Bf7#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Bf7#
      • 1...Sf3
        • 2.Qxa2#
      • 1...c5
        • 2.Rxc5#
      • 1...Sb3!
    • 1.Sxf5?
      • threat
        • 2.Qd4#
      • 1...exf5
        • 2.Bf7#
      • 1...e5
        • 2.Bf7#
      • 1...Sf3
        • 2.Qxa2#
      • 1...c5
        • 2.Rxc5#
      • 1...Sb3!
    • 1.Sxc6?
      • threat
        • 2.Qd4#
      • 1...Qxc6
        • 2.Bxc6#
      • 1...e5
        • 2.Bf7#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sf3!
    • 1.Bc5?
      • threat
        • 2.Qd4#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sf3
        • 2.Qxa2#
      • 1...e5!
    • 1.Rd8+?
      • 1...Rd7
        • 2.Rxd7#
      • 1...Qxd8!
  • Keys
    • 1.fxe3!
      • threat
        • 2.Qd4#
      • 1...Sxe3
        • 2.Qe5#
      • 1...e5
        • 2.Bf7#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sf3
        • 2.Qxa2#
      • 1...c5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(n);N_GUARD::B(J),XP(j)
    • R(l);S_CUTQ(n)::B(J),XP(j)
    • S(f);N_GUARD,XP(B)::QAR1(A)
    • S(f);N_GUARD::QAR1(A),XS(f)
    • S(f);N_GUARD::QAR1(A)
    • P(j);OGATE::R1(I),XP(j)
    • P(k);OGATEB::B(J)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • P(k);OGATEB::B(J)
        • S(b);N_GUARD::QAB(A),XP(a)
        • P(j);OGATE::R1(I),XP(j)
      • Refutation
        • S(b);
    • Try
      • S(D);XP(i)
      • Threat
        • QAR1(A)
      • Vars
        • P(k);OGATEB,XS(D)::B(J)
        • P(k);OGATEB::B(J)
        • S(b);N_GUARD::QAB(A),XP(a)
        • P(j);OGATE::R1(I),XP(j)
      • Refutation
        • S(b);
    • Try
      • S(G);XP(j)
      • Threat
        • QAR1(A)
      • Vars
        • Q(n);OGATE,XS(G)::B(J),XQ(n)
        • P(k);OGATEB::B(J)
        • S(b);N_GUARD::QAB(A)
      • Refutation
        • S(b);
    • Try
      • B(H);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);N_GUARD::QAB(A)
        • S(b);N_GUARD::QAB(A),XP(a)
      • Refutation
        • P(k);
    • Try
      • R(I);CHECK
      • Vars
        • R(l);N_GUARD,P_SPINR(l)::R(I),XR(l)
      • Refutation
        • Q(n);P_PINB(J),XR(I)
  • Actual
    • P(B);XP(d)
    • Threat
      • QAR1(A)
    • Vars
      • S(f);N_GUARD,XP(B)::QAR1(A)
      • P(k);OGATEB::B(J)
      • S(b);N_GUARD::QAB(A)
      • S(b);N_GUARD::QAB(A),XP(a)
      • P(j);OGATE::R1(I),XP(j)
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