MESON Chess Problem Database

Problem Display
PID: 244482 (6B1/8/N7/1pp5/1q6/2kPPR2/1b1R3Q/7K w - - 0 1)

Fomichev, Evgeny Vasilevich

Schach, 1986

6B1/8/N7/1pp5/1q6/2kPPR2/1b1R3Q/7K

#2

8 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rxb2?
      • threat
        • 2.Qc2#
        • 2.Qd2#
      • 1...Kxd3
        • 2.Qc2#
      • 1...Qb3
        • 2.Rxb3#
        • 2.Qd2#
      • 1...Qa4
        • 2.Qd2#
      • 1...Qh4
        • 2.Rb3#
      • 1...Qxb2!
    • 1.d4?
      • threat
        • 2.e4#
      • 1...Qxd4
        • 2.exd4#
      • 1...cxd4
        • 2.exd4#
      • 1...Qc4!
  • Keys
    • 1.e4!
      • threat
        • 2.d4#
      • 1...Kd4
        • 2.Qh8#
      • 1...Qxe4
        • 2.dxe4#
      • 1...Qc4
        • 2.dxc4#
      • 1...Qd4
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,XP(D)::QAB1(C)
        • Q(c);::QAB1(C)
        • Q(c);N_GUARD,P_PINQ(C)::R1(B)
      • Refutation
        • Q(c);XR(B)
    • Try
      • P(D);
      • Threat
        • R(F)+P(E)
      • Vars
        • Q(c);OGATE,XP(D)::R(F)+P(E),XQ(c)
        • P(e);OGATE,XP(D)::R(F)+P(E),XP(e)
      • Refutation
        • Q(c);
  • Actual
    • P(E);
    • Threat
      • R(F)+P(D)
    • Vars
      • K(b);S_FLIGHT::QAB(C)
      • Q(c);OGATE,P_PINR(F),XP(E)::R(F)+P(D),XQ(c)
      • Q(c);OGATE::R(F)+P(D),XQ(c)
      • Q(c);SBLOCK::R1(B)
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