MESON Chess Problem Database

Problem Display
PID: 202601 (3r2b1/3p4/2p1Rpp1/5kp1/r3R3/pQp3B1/K7/8 w - - 0 1)

Vesz, Tibor

Magyar Sakkvilag, 1923

3r2b1/3p4/2p1Rpp1/5kp1/r3R3/pQp3B1/K7/8

#2

5 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Qf3#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Qb5+?
      • 1...c5
        • 2.Qf1#
      • 1...d5
        • 2.Qf1#
      • 1...cxb5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qf2#
      • 1...Bxe6+
        • 2.Rc4#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...dxe6
        • 2.Rd4#
      • 1...g4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(b);OGATE::QAR2(B)
    • P(f);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK,P_SPINR(E)
      • Vars
        • P(f);P_SPINP(f)::QAR(B)
        • P(i);N_PINR(E),P_SPINP(i)::QAR(B)
      • Refutation
        • P(f);XQ(B)
  • Actual
    • Q(B);P_SPINR(E)
    • Threat
      • QAR(B)
    • Vars
      • B(k);CHECK,SBLOCK,XR(E)::QAB(B)+R(D)
      • R(c);OGATE,P_SPINR(c),XR(D)::QAB1(B),XR(c)
      • P(i);SBLOCK,XR(E)::QAB(B)+R(D)
      • P(e);SBLOCK::QAB(B)+R(D),DCHECK
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Developed and maintained by Brian Stephenson.
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