MESON Chess Problem Database

Problem Display
PID: 276243 (8/3p4/3P2p1/2P3K1/3QpP2/2p2kpp/2R4P/8 w - - 0 1)

Trilling, Anton AC

Die Schwalbe, 1933

8/3p4/3P2p1/2P3K1/3QpP2/2p2kpp/2R4P/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...gxh2
      • 2.Qf2#
    • 1...g2
      • 2.Rf2#
      • 2.Qf2#
    • 1...e3
      • 2.Qd5#
  • Tries
    • 1.Ra2?
      • 1...gxh2
        • 2.Qf2#
      • 1...g2
        • 2.Rf2#
        • 2.Qf2#
      • 1...e3
        • 2.Qd5#
      • 1...c2!
    • 1.Re2?
      • threat
        • 2.Qe3#
        • 2.Qxe4#
      • 1...gxh2
        • 2.Qf2#
        • 2.Qe3#
      • 1...e3
        • 2.Qxe3#
      • 1...Kxe2!
    • 1.Qg1?
      • threat
        • 2.Qxg3#
      • 1...gxh2
        • 2.Qf2#
      • 1...g2
        • 2.Qf2#
      • 1...e3!
    • 1.Qd2?
      • threat
        • 2.Qe2#
      • 1...gxh2
        • 2.Qf2#
      • 1...e3
        • 2.Qd5#
      • 1...cxd2!
    • 1.Qd3+?
      • 1...e3
        • 2.Qd5#
      • 1...exd3!
    • 1.Qc4?
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Qxc3#
      • 1...e3
        • 2.Qd5#
      • 1...gxh2!
    • 1.hxg3?
      • threat
        • 2.Qf2#
      • 1...Kxg3
        • 2.Qf2#
        • 2.Qe3#
      • 1...e3!
    • 1.f5?
      • 1...gxh2
        • 2.Qf2#
      • 1...g2
        • 2.Rf2#
        • 2.Qf2#
      • 1...e3
        • 2.Qf4#
        • 2.Qg4#
        • 2.Qd5#
      • 1...gxf5!
    • 1.c6?
      • 1...gxh2
        • 2.Qf2#
      • 1...g2
        • 2.Rf2#
        • 2.Qf2#
      • 1...e3
        • 2.Qd5#
      • 1...dxc6!
  • Keys
    • 1.Qh8!
      • 1...Ke3
        • 2.Qxc3#
      • 1...gxh2
        • 2.Qxh3#
      • 1...g2
        • 2.Qxh3#
      • 1...e3
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD,XP(B)::QAR1(C)
    • P(e);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • R(A);
      • Vars
        • P(c);N_GUARD,XP(B)::QAR1(C)
        • P(e);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAR1(C),XP(e)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(c)
      • Vars
        • P(c);N_GUARD,XP(B)::QAR1(C)
        • P(c);N_GUARD::QAR1(C)
      • Refutation
        • P(e);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(c);N_GUARD,XP(B)::QAR1(C)
        • P(e);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • P(e);OGATEB,P_SPINP(e),SBLOCK::QAB(C)
      • Refutation
        • P(e);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT,S_CUTP(e)::QAR2(C),XP(a)
        • P(e);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(c);XP(B)
    • Try
      • P(B);XP(c)
      • Threat
        • QAR1(C)
      • Refutation
        • P(e);
    • Try
      • P(D);
      • Vars
        • P(c);N_GUARD,XP(B)::QAR1(C)
      • Refutation
        • P(f);XP(D)
    • Try
      • P(E);
      • Vars
        • P(c);N_GUARD,XP(B)::QAR1(C)
        • P(e);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(g);XP(E)
  • Actual
    • Q(C);
    • Vars
      • K(b);P-FLIGHT,S_CUTP(e)::QAR2(C),XP(a)
      • P(c);OGATEB,XP(B)::QAR2(C),XP(d)
      • P(c);OGATEB::QAR2(C),XP(d)
      • P(e);OGATEB,SBLOCK::QAB(C)
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