MESON Chess Problem Database

Problem Display
PID: 218030 (1nRR1N1K/4kp2/5p2/3p4/7b/1p4p1/q3N3/Q7 w - - 0 1)

Miltner, Ivan

Plesnivy, Emil

Deutsche Schachzeitung, 1944

1nRR1N1K/4kp2/5p2/3p4/7b/1p4p1/q3N3/Q7

#2

6 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qa3#
    • 1...Qxe2
      • 2.Qa3#
    • 1...Qa3
      • 2.Qxa3#
    • 1...Sa6
      • 2.Rd7#
    • 1...Sc6
      • 2.Rd7#
    • 1...Sd7
      • 2.Rxd7#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sf5#
      • 1...f5
        • 2.Sxf5#
      • 1...Qb1
        • 2.Qa3#
      • 1...Qf2
        • 2.Qa3#
      • 1...Qc2!
    • 1.Sg6+?
      • 1...Ke6
        • 2.Sd4#
      • 1...fxg6!
    • 1.Rc7+?
      • 1...Sd7
        • 2.Rcxd7#
      • 1...Kxd8!
    • 1.Rxb8?
      • threat
        • 2.Rd7#
      • 1...Qa7
        • 2.Qxa7#
      • 1...Qa4!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sxd5#
      • 1...Sd7
        • 2.Rxd7#
      • 1...Qd2
        • 2.Qa3#
      • 1...Qg2
        • 2.Qa3#
      • 1...Qa5
        • 2.Qe1#
      • 1...Qa8
        • 2.Qe1#
      • 1...b2
        • 2.Qe1#
      • 1...d4
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(a);OGATE::QAB(A)
    • Q(a);OGATE,XS(B)::QAB(A)
    • Q(a);OGATE::QAB(A),XQ(a)
    • S(i);N_GUARD::R1(D)
    • S(i);N_GUARD::R1(D),XS(i)
    • P(f);N_GUARD::QAR2(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • P(f);::S(B),XP(f)
        • Q(a);OGATE::QAB(A)
      • Refutation
        • Q(a);
    • Try
      • S(E);CHECK
      • Vars
        • K(g);P-FLIGHT::S(B)
      • Refutation
        • P(h);XS(E)
    • Try
      • R(C);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::R1(C),XS(i)
      • Refutation
        • K(g);S_FLIGHT,XR(D)
    • Try
      • R(C);XS(i)
      • Threat
        • R1(D)
      • Vars
        • Q(a);OGATE::QAR(A),XQ(a)
      • Refutation
        • Q(a);
  • Actual
    • S(B);
    • Threat
      • S(B),XP(e)
    • Vars
      • S(i);N_GUARD::R1(D),XS(i)
      • Q(a);OGATE::QAB(A)
      • Q(a);N_GUARD::QAR(A)
      • P(b);S_CUTQ(a)::QAR(A)
      • P(e);::S(B)
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