MESON Chess Problem Database

Problem Display
PID: 250146 (8/b6B/K1PR4/N3k1p1/1Q2p3/7N/1p6/1rqn3b w - - 0 1)

Rothler, Emil

Magyar Sakkvilag, 1927

8/b6B/K1PR4/N3k1p1/1Q2p3/7N/1p6/1rqn3b

#2

7 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Sc4#
    • 1...Qe3
      • 2.Sc4#
    • 1...Qf4
      • 2.Sc4#
    • 1...Qc4+
      • 2.Sxc4#
    • 1...Qxc6+
      • 2.Sxc6#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bb8
      • 2.Qd4#
    • 1...Sc3
      • 2.Sc4#
  • Tries
    • 1.Re6+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Kxe6!
    • 1.Qc4?
      • threat
        • 2.Re6#
        • 2.Qd5#
        • 2.Qe6#
      • 1...Qxc4+
        • 2.Sxc4#
      • 1...Qd2
        • 2.Re6#
        • 2.Qe6#
      • 1...Sc3
        • 2.Re6#
        • 2.Qe6#
      • 1...Se3
        • 2.Re6#
        • 2.Qe6#
      • 1...e3
        • 2.Re6#
        • 2.Qe6#
      • 1...Kxd6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd5#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qxc6+
        • 2.Sxc6#
      • 1...Qxd2
        • 2.Sc4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Qc5
        • 2.Qh2#
      • 1...Sc3
        • 2.Sc4#
      • 1...Se3
        • 2.Qh2#
      • 1...e3
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD::S(C)
    • Q(b);CHECK,N_GUARD::S(C),XQ(b)
    • Q(b);CHECK,XP(E)::S(C),XQ(b)
    • B(i);N_GUARD::QAB1(B),XB(i)
    • B(i);N_GUARD::QAB1(B)
    • S(c);S_CUTQ(b)::S(C)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(g);P-FLIGHT::QAR1(B)
      • Refutation
        • K(g);P-FLIGHT,XR(F)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);CHECK,XQ(B)::S(C),XQ(b)
      • Refutation
        • K(g);S_FLIGHT,XR(F)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • Q(b);CHECK,N_GUARD::S(C),XQ(b)
      • Q(b);CHECK,XP(E)::S(C),XQ(b)
      • Q(b);N_GUARD,XQ(B)::S(C)
      • B(i);N_GUARD::QAB1(B),XB(i)
      • Q(b);N_GUARD::QAB(B)
      • S(c);S_CUTQ(b)::S(C)
      • S(c);S_CUTQ(b)::QAB(B)
      • P(f);S_CUTQ(b)::QAB(B)
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