MESON Chess Problem Database

Problem Display
PID: 287185 (3R2bB/p1r5/5N2/K1pP1p2/2PkPPp1/3pn1Q1/1N4p1/2R3b1 w - - 0 1)

Paslack, Rainer

Problem-Forum, 2008

3R2bB/p1r5/5N2/K1pP1p2/2PkPPp1/3pn1Q1/1N4p1/2R3b1

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qxd3#
    • 1...Sf1
      • 2.Qxd3#
    • 1...Sc2
      • 2.Qxd3#
    • 1...Sxc4+
      • 2.Rxc4#
    • 1...Sxd5
      • 2.Qxd3#
    • 1...fxe4
      • 2.Sd7#
  • Tries
    • 1.Sh7+?
      • 1...Kxe4
        • 2.Sg5#
      • 1...Rg7!
    • 1.Se8+?
      • 1...Kxe4
        • 2.Sd6#
      • 1...Rg7!
    • 1.Rc3?
      • threat
        • 2.Rxd3#
      • 1...Sxc4+
        • 2.Rxc4#
      • 1...fxe4
        • 2.Sd7#
      • 1...d2
        • 2.Rd3#
      • 1...Kxc3!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qc3#
      • 1...Sxc4+
        • 2.Rxc4#
      • 1...Sxd5
        • 2.Qxg1#
      • 1...Sd1
        • 2.Sd7#
      • 1...Sf1
        • 2.Sd7#
      • 1...Sc2
        • 2.Sd7#
      • 1...d2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(d);OGATE::QAR1(C),XP(c)
    • S(d);CHECK,OGATE,XP(D)::R1(A),XS(d)
    • S(d);OGATE,P_SPINS(d),XP(H)::QAR1(C),XP(c)
    • P(h);SBLOCK,XP(E)::B(K)+S(I)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(e);P-FLIGHT,S_CUTR(j),XP(E)::S(I)
      • Refutation
        • R(j);P_SPINR(j)
    • Try
      • S(I);CHECK
      • Vars
        • K(e);P-FLIGHT,S_CUTR(j),XP(E)::S(I)
      • Refutation
        • R(j);P_SPINR(j)
    • Try
      • R(A);
      • Threat
        • R1(A),XP(c)
      • Vars
        • S(d);CHECK,OGATE,XP(D)::R1(A),XS(d)
        • P(h);SBLOCK,XP(E)::B(K)+S(I)
        • P(c);::R1(A)
      • Refutation
        • K(e);S_FLIGHT,XR(A)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • S(d);CHECK,OGATE,XP(D)::R1(A),XS(d)
      • S(d);OGATEB,P_SPINS(d),XP(H)::QAB(C),XB(a)
      • S(d);::B(K)+S(I)
      • P(c);OGATEB::QAR2(C),XP(c)
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