MESON Chess Problem Database

Problem Display
PID: 201596 (7K/2p5/4pRPp/4p1kP/7p/4N2p/3Q4/8 w - - 0 1)

Stepanek, B

Studentsky casopis, 1922

7K/2p5/4pRPp/4p1kP/7p/4N2p/3Q4/8

#2

6 + 7

6490 yacpdb 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qd8#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qxe5#
      • 1...Kxh5
        • 2.Qxe5#
      • 1...e4
        • 2.Qe5#
      • 1...Kxf6!
    • 1.Qb2?
      • threat
        • 2.Qxe5#
      • 1...Kxh5
        • 2.Qxe5#
      • 1...e4
        • 2.Qe5#
      • 1...Kxf6!
    • 1.Qh2?
      • threat
        • 2.Qxe5#
      • 1...Kxh5
        • 2.Qxe5#
      • 1...e4
        • 2.Qe5#
      • 1...Kxf6!
    • 1.Qd4?
      • threat
        • 2.Qxe5#
      • 1...Kxh5
        • 2.Qxe5#
        • 2.Qg4#
      • 1...Kxf6
        • 2.Qxh4#
        • 2.Qd8#
      • 1...e4
        • 2.Qe5#
      • 1...exd4!
    • 1.Qd6?
      • threat
        • 2.Qxe5#
      • 1...Kxh5
        • 2.Qxe5#
      • 1...Kxf6
        • 2.Qd8#
      • 1...e4
        • 2.Qe5#
      • 1...cxd6!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qxe5#
      • 1...Kxh5
        • 2.Qxe5#
      • 1...Kxf6
        • 2.Qd8#
      • 1...exd5
        • 2.Rf5#

Anticipated by 119957(1905)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);OGATEB,S_FLIGHT,XR(D)::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(c)
      • Vars
        • K(d);P-FLIGHT,XP(C)::QAR(A),XP(c)
        • P(c);::QAR2(A)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(c)
      • Vars
        • K(d);P-FLIGHT,XP(C)::QAR(A),XP(c)
        • P(c);::QAR2(A)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(c)
      • Vars
        • K(d);P-FLIGHT,XP(C)::QAR(A),XP(c)
        • P(c);::QAR2(A)
      • Refutation
        • K(d);S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(c)
      • Vars
        • P(c);::QAR2(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(c)
      • Vars
        • K(d);P-FLIGHT,XP(C)::QAR(A),XP(c)
        • K(d);OGATEB,P_SPINP(e),S_FLIGHT,XR(D)::QAB(A)
        • P(c);::QAR2(A)
      • Refutation
        • P(g);XQ(A)
  • Actual
    • Q(A);P_PINP(c)
    • Threat
      • QAR2(A),XP(c)
    • Vars
      • K(d);P-FLIGHT,XP(C)::QAR(A),XP(c)
      • K(d);N_SPINP(c),OGATEB,S_FLIGHT,XR(D)::QAB(A)
      • P(e);N_GUARD,N_SPINP(c),XQ(A)::R1(D)
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