MESON Chess Problem Database

Problem Display
PID: 231538 (8/8/8/5K2/8/4kp2/7R/2bQ4 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1927

8/8/8/5K2/8/4kp2/7R/2bQ4

#2

3 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qd2#
    • 1...Bd2
      • 2.Qxd2#
    • 1...Ba3
      • 2.Qd2#
    • 1...f2
      • 2.Rh3#
  • Tries
    • 1.Ke5?
      • threat
        • 2.Qb3#
        • 2.Qd4#
      • 1...Bd2
        • 2.Qxd2#
      • 1...f2
        • 2.Rh3#
      • 1...Bb2+!
    • 1.Rb2?
      • 1...Bd2
        • 2.Qxd2#
      • 1...f2
        • 2.Rb3#
      • 1...Bxb2!
    • 1.Rd2?
      • threat
        • 2.Qe1#
      • 1...f2
        • 2.Rd3#
        • 2.Qe2#
      • 1...Bxd2!
    • 1.Rf2?
      • threat
        • 2.Rxf3#
      • 1...Bd2
        • 2.Qxd2#
      • 1...Kxf2!
    • 1.Rg2?
      • 1...Bd2
        • 2.Qxd2#
      • 1...Bb2
        • 2.Qd2#
      • 1...Ba3
        • 2.Qd2#
      • 1...f2
        • 2.Rg3#
      • 1...fxg2!
    • 1.Qd6?
      • 1...Bb2
        • 2.Qd2#
      • 1...Bd2
        • 2.Qxd2#
      • 1...Ba3
        • 2.Qd2#
      • 1...f2!
    • 1.Qd7?
      • 1...Bb2
        • 2.Qd2#
      • 1...Bd2
        • 2.Qxd2#
      • 1...Ba3
        • 2.Qd2#
      • 1...f2!
    • 1.Qd8?
      • 1...Bb2
        • 2.Qd2#
      • 1...Bd2
        • 2.Qxd2#
      • 1...Ba3
        • 2.Qd2#
      • 1...f2!
  • Keys
    • 1.Rc2!
      • 1...Bd2
        • 2.Qxd2#
      • 1...Bb2
        • 2.Qd2#
      • 1...Ba3
        • 2.Qd2#
      • 1...f2
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • P(c);OGATEB,SBLOCK::R(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • P(c);OGATEB,SBLOCK::R(B)
      • Refutation
        • B(a);CHECK
    • Try
      • R(B);
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • P(c);SBLOCK::R(B)
      • Refutation
        • B(a);XR(B)
    • Try
      • R(B);
      • Threat
        • QAR2(A)
      • Refutation
        • B(a);XR(B)
    • Try
      • R(B);
      • Threat
        • R1(B),XP(c)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • R(B);
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • B(a);N_GUARD::QAB1(A)
        • P(c);OGATEB,SBLOCK::R(B)
      • Refutation
        • P(c);XR(B)
    • Try
      • Q(A);
      • Vars
        • B(a);N_GUARD::QAB1(A)
        • B(a);N_GUARD::QAB1(A),XB(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • B(a);N_GUARD::QAB1(A)
        • B(a);N_GUARD::QAB1(A),XB(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • B(a);N_GUARD::QAB1(A)
        • B(a);N_GUARD::QAB1(A),XB(a)
      • Refutation
        • P(c);
  • Actual
    • R(B);
    • Vars
      • B(a);N_GUARD::QAB1(A),XB(a)
      • B(a);N_GUARD::QAB1(A)
      • P(c);SBLOCK::R(B)
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