MESON Chess Problem Database

Problem Display
PID: 257735 (3N4/4p2b/8/1N1k4/4n3/1P2R3/2K2Q2/7B w - - 0 1)

Maximov, Nikolai J

Wiener Schachzeitung, 1902

3N4/4p2b/8/1N1k4/4n3/1P2R3/2K2Q2/7B

#2

7 + 4

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Rd3#
  • Tries
    • 1.Re1?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Rd1#
      • 1...Ke5!
    • 1.Re2?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Rd2#
      • 1...Ke5!
    • 1.Rc3?
      • threat
        • 2.Rc5#
        • 2.Qd4#
        • 2.Qc5#
      • 1...e5
        • 2.Rd3#
        • 2.Rc5#
        • 2.Qc5#
        • 2.Qd2#
        • 2.Qf7#
      • 1...Ke5!
    • 1.Rg3?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Rd3#
      • 1...Ke5!
    • 1.Rh3?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Rd3#
      • 1...Ke5!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Qd4#
      • 1...Sd2+
        • 2.Rf5#
      • 1...Sxf2+
        • 2.Rf5#
      • 1...Sc3+
        • 2.Rf5#
      • 1...Sg3+
        • 2.Rf5#
      • 1...Sc5+
        • 2.Rf5#
      • 1...Sg5+
        • 2.Rf5#
      • 1...Sd6+
        • 2.Rf5#
      • 1...Sf6+
        • 2.Rf5#
      • 1...Ke5
        • 2.Qd4#
      • 1...e5
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::R(E)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::R(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(E);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::R(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(E);
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • R(E);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::R(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • R(E);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::R(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
  • Actual
    • R(E);N_PINS(a)
    • Threat
      • QAR1(C)
    • Vars
      • S(a);CHECK::B(A)+R(E),DCHECK
      • S(a);CHECK,XQ(C)::B(A)+R(E),DCHECK
      • K(b);P-FLIGHT::QAB1(C)
      • P(c);SBLOCK::R(E)
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