MESON Chess Problem Database

Problem Display
PID: 164206 (3N4/4R3/3k4/3p4/n6Q/K7/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1988

3N4/4R3/3k4/3p4/n6Q/K7/8/8

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb4#
    • 1...Sb2
      • 2.Qb4#
    • 1...Sc3
      • 2.Qb4#
    • 1...Sb6
      • 2.Qb4#
  • Tries
    • 1.Kxa4?
      • threat
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...d4!
    • 1.Ra7?
      • threat
        • 2.Qe7#
      • 1...Kc5
        • 2.Qb4#
      • 1...d4
        • 2.Qxd4#
      • 1...Ke5!
    • 1.Rb7?
      • threat
        • 2.Qe7#
      • 1...Kc5
        • 2.Qb4#
      • 1...d4
        • 2.Qxd4#
      • 1...Ke5!
    • 1.Rg7?
      • threat
        • 2.Qe7#
      • 1...Kc5
        • 2.Qb4#
      • 1...d4
        • 2.Qxd4#
      • 1...Ke5!
    • 1.Rh7?
      • threat
        • 2.Qe7#
      • 1...Kc5
        • 2.Qb4#
      • 1...d4
        • 2.Qxd4#
      • 1...Ke5!
    • 1.Qe1?
      • 1...Kc5
        • 2.Qb4#
      • 1...d4
        • 2.Qe5#
      • 1...Sb2
        • 2.Qb4#
      • 1...Sc5
        • 2.Qe5#
      • 1...Sb6
        • 2.Qb4#
      • 1...Sc3!
    • 1.Qd4?
      • 1...Sc5
        • 2.Qe5#
      • 1...Sb2
        • 2.Qb4#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sb6
        • 2.Qb4#
      • 1...Kxe7!
    • 1.Qe4?
      • 1...Kc5
        • 2.Qb4#
      • 1...Sc5
        • 2.Qe5#
      • 1...Sb2
        • 2.Qb4#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sb6
        • 2.Qb4#
      • 1...d4
        • 2.Sb7#
        • 2.Qe5#
      • 1...dxe4!
    • 1.Qf4+?
      • 1...Kc5
        • 2.Qb4#
      • 1...Kxe7!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Qe7#
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke5
        • 2.Qf4#
      • 1...d4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::QAB1(B)
    • S(a);N_GUARD::QAB(B)
  • Tries
    • Try
      • K(A);P-FLIGHT,XS(a)
      • Threat
        • QAB(B)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(b);OGATEB::QAR2(B),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(b);OGATEB::QAR2(B),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(b);OGATEB::QAR2(B),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(b);OGATEB::QAR2(B),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(b);::QAB1(B)
        • S(a);N_GUARD::QAB(B)
        • S(a);SBLOCK::QAB1(B)
      • Refutation
        • S(a);
    • Try
      • Q(B);P_PINP(b)
      • Vars
        • S(a);SBLOCK::QAB1(B)
        • S(a);N_GUARD::QAB(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • S(a);SBLOCK::QAB1(B)
        • S(a);N_GUARD::QAB(B)
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
  • Actual
    • R(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • P(b);OGATEB::QAR2(B),XP(b)
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