MESON Chess Problem Database

Problem Display
PID: 193411 (6K1/3B4/3pNb2/3kp3/R1b3p1/6Q1/4P3/2r5 w - - 0 1)

Charvat, Prokop

Magyar Sakkvilag, 1914

6K1/3B4/3pNb2/3kp3/R1b3p1/6Q1/4P3/2r5

#2

6 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd3#
    • 1...Ba2
      • 2.Qd3#
      • 2.e4#
    • 1...Bb3
      • 2.Qd3#
      • 2.e4#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bb5
      • 2.e4#
    • 1...Ba6
      • 2.e4#
  • Tries
    • 1.Ra5+?
      • 1...Bb5
        • 2.Qd3#
      • 1...Ke4!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qb7#
      • 1...Ke4
        • 2.Qd3#
      • 1...Bxb3
        • 2.e4#
      • 1...Rb1
        • 2.Qxc4#
      • 1...e4
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(d);P_PINS(D),P_SPINB(b),S_FLIGHT::QAB1(B)
    • B(b);N_GUARD::QAR2(B),XB(b)
    • B(b);::P(A)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • B(b);P_SPINB(b)::QAR2(B)
      • Refutation
        • K(d);P_PINS(D),S_FLIGHT
  • Actual
    • Q(B);P_PINB(b)
    • Threat
      • QAB(B)
    • Vars
      • K(d);P_PINS(D),S_FLIGHT::QAB1(B)
      • B(b);N_SPINB(b),XQ(B)::P(A)
      • R(a);N_GUARD::QAB1(B),XB(b)
      • P(e);SBLOCK::R(C)
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