MESON Chess Problem Database

Problem Display
PID: 175727 (8/2K5/8/3pk3/1P2pNPB/4Q3/8/8 w - - 0 1)

Marin y Llovet, Valentin

Ruy Lopez, 1898

8/2K5/8/3pk3/1P2pNPB/4Q3/8/8

#2

6 + 3

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qc1?
      • 1...Kd4
        • 2.Bf6#
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
    • 1.Qg1?
      • 1...Kxf4
        • 2.Qg3#
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
    • 1.Qd2?
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
    • 1.Qf2?
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
    • 1.Qc5?
      • 1...e3
        • 2.Qxe3#
      • 1...Kxf4!
    • 1.Qb6?
      • threat
        • 2.Sg6#
        • 2.Qf6#
      • 1...e3
        • 2.Qxe3#
      • 1...d4
        • 2.Qd6#
        • 2.Qf6#
      • 1...Kxf4!
    • 1.Qc3+?
      • 1...Kxf4
        • 2.Qg3#
      • 1...d4!
  • Keys
    • 1.Qb3!
      • 1...Kd4
        • 2.Bf6#
      • 1...Kxf4
        • 2.Qg3#
      • 1...e3
        • 2.Qxe3#
      • 1...d4
        • 2.Sg6#

This anticipates 169420(1909)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(c);S_FLIGHT::B(E)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(C)::QAB1(A)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(a),P_PINP(b)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XS(C)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(C)::QAB1(A)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(c);S_FLIGHT::B(E)
      • K(c);OGATEB,S_FLIGHT,XS(C)::QAB1(A)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(b);SBLOCK::S(C)
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