MESON Chess Problem Database

Problem Display
PID: 117999 (8/4R3/3p3B/R2p3q/p1Pk3p/p7/1nQ1pN2/2N1Kn2 w - - 0 1)

Paslack, Rainer

1st Prize, Schach, 1989

8/4R3/3p3B/R2p3q/p1Pk3p/p7/1nQ1pN2/2N1Kn2

#2

8 + 10

45 Schach 1993
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Rxd5#
    • 1...Qg6
      • 2.Sxe2#
      • 2.Rxd5#
    • 1...Qf7
      • 2.Sxe2#
    • 1...Qe8
      • 2.Sxe2#
      • 2.Bg7#
      • 2.Rxd5#
    • 1...Qf5
      • 2.Sxe2#
    • 1...Qg5
      • 2.Sxe2#
    • 1...Qxh6
      • 2.Sxe2#
      • 2.Rxd5#
    • 1...Sd2
      • 2.Be3#
    • 1...Sh2
      • 2.Be3#
    • 1...Se3
      • 2.Bxe3#
    • 1...Sg3
      • 2.Be3#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3+
      • 2.Qxd3#
    • 1...Sxc4
      • 2.Qd3#
    • 1...dxc4
      • 2.Re4#
  • Tries
    • 1.Sa2?
      • threat
        • 2.Qc3#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Qf3!
    • 1.Sg4?
      • threat
        • 2.Sxe2#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Qxg4
        • 2.Rxd5#
      • 1...Sg3
        • 2.Be3#
      • 1...Qe5!
    • 1.Bg5?
      • threat
        • 2.Rxd5#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Qxg5
        • 2.Sxe2#
      • 1...Sxc4
        • 2.Qd3#
      • 1...dxc4
        • 2.Re4#
      • 1...Qf7
        • 2.Sxe2#
      • 1...Se3
        • 2.Bxe3#
      • 1...Qf3!
    • 1.Re3?
      • threat
        • 2.Qc3#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sxe3!
    • 1.Qxb2+?
      • 1...Kxc4
        • 2.Rc7#
      • 1...axb2!
    • 1.Qd2+?
      • 1...Kxc4
        • 2.Rc7#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Sxd2!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qc3#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...dxe4
        • 2.Rxe4#
      • 1...Qf3
        • 2.Rxd5#
      • 1...Qe5
        • 2.Sxe2#
      • 1...Sd1
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(i);N_GUARD::R1(F),XP(h)
    • Q(i);N_GUARD::S(A),XP(c)
    • S(a);N_GUARD::B(G)
    • S(a);N_GUARD::B(G),XS(a)
    • S(b);N_GUARD::QAR1(C)
    • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
    • S(b);N_GUARD,XP(E)::QAR1(C)
    • P(h);N_GUARD,XP(E)::R1(H)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(C)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • Q(i);
    • Try
      • S(D);
      • Threat
        • S(A),XP(c)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • Q(i);N_GUARD,XS(D)::R1(F),XP(h)
        • S(a);N_GUARD::B(G)
      • Refutation
        • Q(i);
    • Try
      • B(G);
      • Threat
        • R1(F),XP(h)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • Q(i);N_GUARD,XB(G)::S(A),XP(c)
        • S(b);N_GUARD,XP(E)::QAR1(C)
        • P(h);N_GUARD,XP(E)::R1(H)
        • Q(i);N_GUARD::S(A),XP(c)
        • S(a);N_GUARD::B(G),XS(a)
      • Refutation
        • Q(i);
    • Try
      • R(H);
      • Threat
        • QAB1(C)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(a);XR(H)
    • Try
      • Q(C);CHECK,XS(b)
      • Vars
        • K(f);P-FLIGHT,XP(E)::R(H)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(E)::R(H)
        • S(b);CHECK,N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • S(D);
    • Threat
      • QAB1(C)
    • Vars
      • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
      • P(h);OGATE,XS(D)::R1(H),XP(h)
      • Q(i);N_GUARD::R1(F),XP(h)
      • Q(i);N_GUARD::S(A),XP(c)
      • S(b);N_GUARD::QAR1(C)
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