MESON Chess Problem Database

Problem Display
PID: 145402 (5K2/2p4b/5Q2/2pkBpp1/N3R3/1Pp1rNrB/2P2q2/4R3 w - - 0 1)

Papack, Daniel

2nd Prize, Die Schwalbe, 2011

5K2/2p4b/5Q2/2pkBpp1/N3R3/1Pp1rNrB/2P2q2/4R3

#2

10 + 10

23 Die Schwalbe 2013
23 Die Schwalbe 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qc6#
    • 1...Rxe1
      • 2.Sxc3#
    • 1...Re2
      • 2.Sxc3#
    • 1...Rxe4
      • 2.Sxc3#
    • 1...c4
      • 2.Rd4#
    • 1...fxe4
      • 2.Qe6#
  • Tries
    • 1.Sb6+?
      • 1...Kxe4
        • 2.Qc6#
      • 1...cxb6!
    • 1.Bxg3?
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qc6#
      • 1...Rxe4
        • 2.Sxc3#
      • 1...Bg8!
    • 1.Bxc7?
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qc6#
      • 1...Rxe4
        • 2.Sxc3#
        • 2.Sb6#
        • 2.Qd6#
      • 1...Bg8!
    • 1.Rd1+?
      • 1...Kxe4
        • 2.Qc6#
      • 1...Rd3
        • 2.Sxc3#
      • 1...Qd2!
    • 1.Qd6+?
      • 1...Kxe4
        • 2.Qc6#
      • 1...cxd6!
    • 1.Qe6+?
      • 1...Kxe4
        • 2.Qc6#
      • 1...Kxe6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qc6#
      • 1...Kxe4
        • 2.Sxc3#
      • 1...Rxe4
        • 2.Qe6#
      • 1...cxd4
        • 2.Rxd4#
      • 1...fxe4
        • 2.Be6#
      • 1...c6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(f);P_SPINR(c),S_FLIGHT,XR(G)::QAB(I)
    • R(c);N_GUARD,XR(A)::S(F),XP(b)
    • R(c);N_GUARD::S(F),XP(b)
    • R(c);N_GUARD,XR(G)::S(F),XP(b)
    • P(e);N_GUARD::R1(G)
    • P(g);SBLOCK,XR(G)::QAB1(I)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);P_SPINR(c),S_FLIGHT,XR(G)::QAB(I)
      • Refutation
        • P(i);XS(F)
    • Try
      • B(H);XR(d)
      • Threat
        • QAB1(I)
      • Vars
        • K(f);P_SPINR(c),S_FLIGHT,XR(G)::QAB(I)
        • R(c);N_GUARD,XR(G)::S(F),XP(b)
      • Refutation
        • B(j);
    • Try
      • B(H);XP(i)
      • Threat
        • QAB1(I)
      • Vars
        • K(f);P_SPINR(c),S_FLIGHT,XR(G)::QAB(I)
      • Refutation
        • B(j);
    • Try
      • R(A);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(G)::QAB(I)
        • R(c);P_SPINR(c)::S(F),XP(b)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);P_SPINR(c),S_FLIGHT,XR(G)::QAB(I)
      • Refutation
        • P(i);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);P_SPINR(c),S_FLIGHT,XR(G)::QAB(I)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT,XQ(I)
  • Actual
    • S(D);
    • Threat
      • QAB1(I)
    • Vars
      • K(f);P_SPINR(c),S_FLIGHT,XR(G)::S(F),XP(b)
      • R(c);XR(G)::QAB1(I)
      • P(e);OGATE,XS(D)::R1(G),XP(e)
      • P(g);OGATE,P_PINQ(I),SBLOCK,XR(G)::B(E)
      • P(i);::QAB1(I),XP(i)
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